? Posted: Oct Sat 30, 2004 6:18 am . Hemoglobin and myoglobin are proteins that incorporate 70% of body's iron, and these proteins transfer oxygen to tissues. If you would li. If the swab turns yellow when rubbed on the. Real amber can be differentiated from fakes by the difference in specific gravity – real amber floats in saltwater, scratch test – real amber crumbles, while fake leaves elastic chips. $23. Test for lead, other metals and up to 200 contaminants with results from an EPA-certified laboratory. Another way is to put a bit of Simichrome metal polish or 409 All-Purpose Cleaner on a Q-tip and rub it on the button. Solid Color Bakelite. References Bakelite testing pads are also an alternative to carrying a tube of Simichrome polish with you when you shop. The CA 27. This protein is present when blood clots break down. CPU Select a CPU. 33% Sustained 50% Window. This process will depend on the web hosting company for your site. Bakelite® is the proprietary name for phenolic and other plastic thermoset. If it is Bakelite, the swab will turn yellow. . This bangle was made by the Catalin Corporation circa 1940. 54 £32. However, old wax or polish on the pieces will prevent a positive Bakelite test, as will overdying. Does anyone know whether Faturan can be tested with Simichrome as with Bakelite? If so, how can you tell the difference between the two? Lastly, are there any tests I can do to verify Copal (also called African Amber)? Thanks In Advance! Message 1 of 5 latest reply. Real amber can be differentiated from fakes by the difference in specific gravity – real amber floats in saltwater, scratch test – real amber crumbles, while fake leaves elastic chips. While the Section 409(p) test is a daily test, most ESOPs maintained by private companies typically only update participant balances on an annual basis, as of the last day of the plan year. It can be dangerous to breath in the dust when polishing. You can look in Windows Device Manager in the "Ports (COM & LPT)" section. Is Bakelite worth anything? No matter what type of piece you have, genuine Bakelite jewelry is worth money. 409A rules place significant roadblocks in the way of amending or modifying existing nonqualified deferred compensation plans. Summarise your key findings. In the hot plate test also, caulerpin inhibits the nociception in vivo at a dose of 100 μmol/kg, p. Solution: Bakelite is a thermosetting plastic, which means it retains its shape even at high temperatures. View PDF. Many pieces will test with “Simichrome” polish or Formula 409 which turns from pink to yellow on reacting with the chemicals in. Instead, I have discovered that Formula 409 all-purpose cleaner is a better testing agent. To use, dampen a cotton swab with 409 and rub it gently on the inside of the item being tested. Fashion Accessories. The second. If you find a Bakelite piece, you can polish it with Brasso and remove any oxidation. Some of these are similar in style to older pieces, and they will test as Bakelite. 2 DEC1978 (R2023) Power Take-off Definitions and Terminology for Agricultural Tractors. , Test C), trapping of the Bakelite particles (~ 500 µm) was achieved by their incorporation within aggregates of algal debris. Use a dry toothbrush to reach small crevices, grooves, and cracks. If the item is black Bakelite or lacquered, this test will be negative. Questions are scored as either correct or incorrect — a correct answer is assigned a score of one and an incorrect answer is assigned a score of zero. 2 © 2021 ANSYS, Inc. Whereas, the others mentioned are thermoplastics that can be moulded on heating. This example made of marbled Bakelite as are the chips it holds. Hat. Figure 5. Hyperuricemia is very treatable. Opens in a new window or tab. WDS 8702. Bakelite Canada Inc. The first step is to get some warm. 33% Automatic Brightness Limiting (ABL) Score distribution. M 4. A piece that has been lacquered may have a negative 409 test result. Re: lucite vs. Contents Overview Test Details Results and Follow-Up. Warmed Bakelite smells like camphor. Sepsis is a substantial global health burden and is the leading cause of death among adults in intensive care units (ICUs). Use a dry toothbrush to reach small crevices, grooves, and cracks. These are the Spread of Flame Test, Intermittent Flame Test, and Burning Brand Test. 3. Polymers (OLD NCERT) Chemistry Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions, explanations, NCERT reference and difficulty levelAngle Cock, Ball Type—Specification for Approval S-470 E[S-470]409 Angle Cocks and Brake Pipe End Cocks—Repair Specification S-476 E[S-476]459 Automated Single-Car Test Equipment, Conventional Brake Equipment—Design and Performance Requirements S-4027 E[S-4027]631 Badge Plate for Showing Correct Dimensions for Body and Truck. Make sure the item is clean, wet the end of a Q-tip with Formula 409 then touch it to the piece. A low GFR may be an indicator of kidney disease. 409 does not strip the finish of the piece, but still always test on the back. S. Bakelite in solid colors is the most recognizable type even without employing testing measures. It is useful in the synthesis of other chemical compounds, e. Morphy Auctions Bakelite poker chip caddies came in a variety of shapes back when they were popular in the 1930s. 20 Annex E Test conditions for equipment containing audio amplifiers. If the swab turns yellow, you’ve got vintage Bakelite, according to About. If you’re looking for additional options, many customers also consider furniture by Gispen, Gispen Culemborg, and Wim Rietveld. Explanation: Bakelite is a bad conductor of heat and it does not get soft on heating hence Bakelite is used to prepare handles of cooking utensils. Thin wire in the bulb that gives off light is. . This process will depend on the web hosting company for your site. Platelets are cells that help your blood clot. Some of these are similar in style to older pieces, and they will test as Bakelite. Ang Gru. If a piece is lacquered, it may test negative with 409. #5 Sight- Formula 409 test Dampen a tip of a cotton swab with Formula 409, a household cleaner. Under its terms, an amount deferred under a nonqualified deferred compensation plan must be taken into account as wages for FICA tax purposes as of the later of the date on which the services creating. To the extent that the deferral constitutes wages, FICA taxation is subject to a special timing rule (see Regs. score (X, y, sample_weight = None) [source] ¶ Return the mean accuracy on the given test data and labels. 1. 409 does not affect the "shine" of the finish like Scrubbing Bubbles does so you can test on a visible area. To find out if the Bakelite is real, they recommend conducting the 409 Test. She stumbled across a new method of testing Bakelite. Exercise 2. To use, dampen a cotton swab with 409 and rub it gently on the inside of the item being tested. The production of petrol-based materials moved towards eco-friendly products in the modern world. All Answers (4) Bake lite is a thermoset polymer. 409 Cleaner is another great way to test for Bakelite. Currently the definitive method of testing Bakelite is to put some Formula 409 on the end of a Q-tip and apply a small amount on an inconspicuous portion of the bead in question. Heroux at 312-729-8005 or mark. You can also try the hot water test by dipping. Red is one of the most popular colors of Bakelite jewelry with collectors. Taking the furnace test as a particular example, structural samples are tested in the form of panels, the side within the furnace being subjected to a temperature. There are no mold marks in Bakelite pieces. It is quite easy. What test refers to the separation of blood cells from the plasma (by volume)? Hematocrit Page 409 Page 409 explains the relationship between blood products & tests. It should have the smell of formaldehyde. g. (409) $ 48. If a piece is lacquered, it may test negative with 409. 4. Many pieces will test with “Simichrome” polish or Formula 409 which turns from pink to yellow on reacting with the chemicals in Bakelite. This variety is caused by a wide spectrum of tasks solved by a manufacturer. Contact. $70. valuable plastic jewelry. NEVER use Castrol Super Clean, 409 or other purple cleaners all strongly alkaline. To test by chemical, dip a cotton swab in Formula 409 household cleaner and touch a small area of the piece that won’t be visible. 65737. One way to identify a bakelite button is to run hot water over it and then smell it. Bakelite is an early plastic, created in 1907. Transoptic materials remain molten at maximum temperature and become transparent with an increase in pressure and a decrease in temperature. Bakelite beads or necklaces are probably my favourite form of early plastic jewelry. Location: Monroe, NC 28112. Download Solution PDF. This Court has never. kathyg : posted on August 19, 2001 04:02:20 PM To use, soak a cotton swab in 409 and gently rub it on the inside of the item being tested. 1; Test of backflow prevention devices 312. Bakelite is a “thermoset. And so "Faturan", named after its original inventor, became a brand of cast thermosetting phenol formaldehyde resin, similar to Bakelite and Catalin, manufactured by Traun & Son of Hamburg. These people are lucky. This white crystalline compound is highly soluble in water and polar organic solvents. flickr (cc) · Confirmatory chemical swab on green Prystal. heart, kidney, bone, or muscle damage. 409 Testing: This is the easiest test for the beginner. phenolic plastic in 1909. Along with everything the 409 had, the 327 SS was further festooned with the. (e) “Disability” means a Participant’s inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for aStep 3 – Test the Thermal Fuse. GPU Select a GPU. BAKELITE SYNTHETICS - sales representative Shanghai Road New Material Co. Creatine Kinase (CK) Creatine kinase (CK) is an enzyme that’s found in your skeletal muscle, heart muscle and brain. Bakelite is basically a thermosetting phenol formaldehyde synthetic resin. This measures 6 1/8" square and is 2 1/8" high (when folded). These are the gold standard for polymer AK mags and a perfect addition to any AK owner’s kit. $65. To begin the discussion, it is important that you understand two important definitions: cM: an abbreviation for the word “centimorgan”. (not brown - brown is just dirt. This test, too, is frequently met with failure by black bakelite pieces. A more advanced test is to manually ask your DNS server for the IP address of the domain you're trying to access. We breathe in 20,000 breaths each day, according to the American Lung Association, 90 percent of which occur indoors. Rub the swab against the plastic in question (it Post subject: "409 test". Exercise 3. Hexamethylenetetramine or methenamine is a heterocyclic organic compound with the formula C6H12N4. If your child has recently taken an i-Ready Diagnostic test, you may be confused about what the score means and how to help your child improve. And as is the case with. This is the test that dealers use to verify Bakelite and I have seen Bakelite pieces online that advertise the fact that they have passed the Simichrome test. This is similar to the 409 test. Vintage Jewelry. 5. Question 25. As the An Amazing Discovery For Bakelite Lovers! I just read an amazing blog post from Angiezilla's Boutique. Place 5 ml of glacial acetic acid and 2. 1 c) in the 420–550 °C temperature range. The cotton swab can be used to test the item after it has been dampened with 409 and gently rubbed on the inside. Post subject: "409 test". If it is Bakelite, the swab will turn yellow. If the piece is vintage Bakelite or Catalin, the accumulated patina will show up as a yellow stain on the cotton swab. But it didn't melt or change color or anything. Answer. The presence of such genetic thrombophilia markers as factor V Leiden, prothrombin 20210A mutation, and antiphospholipid antibodies significantly increases a patient’s risk of a thrombotic event. Radon. Old Lucite buttons were colorful. 5. This closure will be invoked with an instance of IlluminateTestingFluentAssertableJson which can be used to make assertions against the JSON that was returned by your application. Uniline P&S X15064 Ribbed Beige Bakelite Duplex 2Prong Outlet Wall Plate Box MCM. Here's how to do it: Dip a cotton swab in 409 household cleaner and touch a small area of the piece, such as a back that won't be visible. But if it is lacquered, it may give a negative test with the 409 methods. 6 The king keeps the order of a state by keeping a military. The Simichrome test. Lucite is a material with low density but is still stronger than previous plastic materials used for button making. <P>-----<BR>Dennis The 409 test is very similar to the Scrubbing Bubbles test. Knowing morning of drug test to-do’s can truly boost your odds of getting a much-desired negative drug test result. Spray a cotton swab with 409 cleaner and if it comes out yellow, it should be Bakelite. Collectors sometimes use the hot water method to test for authentic Bakelite (dip in hot water, rub and test for the smell of formaldehyde) or the 409 method (just a touch of Formula 409 cleaner or Simichrome brand polish on a cotton swab on a hidden area and the swab should turn yellow; rinse the item immediately). 1) (7. Does anyone have any resources to explain the difference?If you rub a q-tip with simichrome polish on Bakelite or Catalin, the polish on the q-tip will turn yellow. Post subject: "409 test". 33% Sustained 100% Window. Most fakes are either hard solids or have that plastic feel to them. A yellowish stain. c. If Bakelite, the Q-tip should turn yellow. 4%. A simple blood test can determine if someone has a proper amount of platelets, or if they have too few. Here’s how to do it: The Hot Water Test# Some collectors recommend you place the jewelry in hot water, then remove and sniff. Rub the swab against the plastic in question (itPost subject: "409 test". Is Galalith biodegradable?Bakelite also feels heavier. D ECME technology can be applied in many product fields. Evaluating patients with suspected diseases associated with elevations in total immunoglobulin E (IgE), including allergic disease, primary immunodeficiencies, infections, malignancies, or other inflammatory diseases Diagnostic evaluation of patients with suspected allergic bronchopulmonary aspergillosis. The rising use of radioactive elements is increasing radioactive pollution and calling for advanced materials to protect individuals. For example, you may get a 409 response when uploading a file that is older than the existing one on the server, resulting in a version control. 00. Polished Bakelite will leave a yellow residue on the cloth regardless of what color the Bakelite is. 409, 421. This volume contraction of polymers often leads to wrapped parts and dimension differences. A model accuracy of 0. on . This test gives your healthcare provider information about your heart. GRANTA EDUPACK Table of Contents Table A1. 20:1 first gear (M21). D-dimer is a. What you need to do is put a small amount of the cleaner on a cotton swab and then give the material a light, gentle rubbing on an unpainted portion. (a) the cell, bulb and the wires make a closed circuit. Vintage Fashion. The top and inside is a bright yellow color, and the bottom is a swirling green and gold design. A couple of good tests for bakelite - one is the 409 test. You need to know what COM port your KKL cable is assigned to. This is our responsibility that your information will be kept all safe. 4 to 5. Bakelite is heavier than other early plastics, and makes a lovely clunking sound when items such as bangles are knocked together. Here are our shop policies:If you are a high-volume seller on eBay, you may want to upload your own reports to manage your business more efficiently. All local educational agencies (LEAs) with eligible students in grades five and eight and in high school (grade ten, eleven, or twelve) administer the CAST. If the piece is vintage Bakelite, the accumulated patina will show up as a yellow stain on the cotton swab. However, old wax or polish on the pieces will prevent a positive Bakelite test, as will overdying. To test the thermal fuse, touch the red and black probe from the multimeter to the two wires attached to the thermal fuse. 1 - 10. Red is one of the most popular colors of Bakelite jewelry with collectors. An air test shall be made by forcing air into the system until there is a uniform gauge pressure of 5 psi (34. It deforms permanently and retains its shape after being heated and molded. Treatments are available if your testosterone levels are. Green Thermoset Plastic Caps with F-217 PTFE Liners are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. Mounting is used when the protection of layers is imperative, and also it. Merge PDF, split PDF, compress PDF, office to PDF, PDF to JPG and more!History "Bakelite" and "Parkesine" are both synthetic resins named after their inventors. This Bangles item by ChrisLorenz has 9 favorites from Etsy shoppers. If it is Bakelite, the swab will turn yellow. Bakelite is a intresting materal. (not brown - brown is just dirt. After gently cleaning the mirror to remove any dirt, Campus Archaeologist Lisa Bright and I swabbed a Q-Tip sprayed with 409 against the back of the mirror. A Bakelite radio should always be kept away. I have always been confused about the Bakelite Catalin Celluloid thing. PERIOD ROAD. Radio Automation reading practice test has 13 questions belongs to the Recent Actual Tests subject. I cannot find original non blue 409 on the market. Bakelite is a space-network polymer. 5 min read. Every company has a product range consisting of several dozens of EMC types. , to make it easier to work through them. Crank handle plain bore fixed grip 316 Stainless Steel. 00 Used; Fluke 101 Basic Digital Multimeter. Along with the water test, the Simichrome test is one of the most popular method’s bakelite identification. Owing to its low electrical conductivity, bakelite is resistant to electric current. Regular reading glasses are designed to be used for viewing materials approximately 12 inches from your eyes（like reading. If it’s true Bakelite it should have a somewhat sweet old chemical smell to it similar to formaldehyde. The same test works with Dow Bathroom Cleaner or 409. It should not be stored with Lucite, Celluloid, or Bakelite that has patina. It will smell like, well, formaldehyde. Details. Introduction. Not so much patterns as function. One other thing, I would appreciate your help and feedback. Although the CA 27. put a small amount of 409 on a swab and rub it on the test area for a few seconds. Another good way to test for Bakelite is to hold it under hot water for about 30 seconds and then smell it. . That is the phenolic resin going into solution. There are many different kinds of plastic buttons and they. 409 followers. It typically involves testing urine for drugs, such as cannabis, opioids, and more. Seen under a loupe, it often has tiny, distinctive fissures or chips that differ from French jet (glass). If the material is bakelite it will turn the Q tip bright yellow. This test involves moistening a cotton swab in regular old Formula 409, then rubbing the swab on the piece in question with moderate pressure. Ltd, Eler, KCC Corporation. 3615-B. It’s easy to tell real Bakelite and Bakelite from Amber. Answer. Bracelets. Together, these hormones regulate body temperature, heart rate, and metabolism. 6%. 2. Flickr. FDA has developed this guidance document to assist industry in preparing premarket notification submissions for medical devices that incorporate a sharps injury prevention feature. Figure 5. Some Bakelite collectors recommend the 409 Test. Really think you need to heat it in a "solvent" to around 250-300 degrees Celcius, m1tanker78 mentioned warm brake fluid. In total 13 questions, 2 questions are Sentence Completion form, 7 questions are Plan, map, diagram labelling form, 4 questions are Summary, form completion form. Ok, so, a gedanken experiment: take a steel sewing needle, longer is better. That score. A serum ferritin test measures the amount of ferritin in your blood. Jay B. [1] A phenol formaldehyde resin, it can be worked with files, grinders, and cutters, and polished to a fine sheen. Cite. 5. NEVER use Castrol Super Clean, 409 or other purple cleaners all strongly alkaline. Made in China. Buy vintage plastics on the Bakelite & Lucite and Accessories pages of the Collectics Online Consignment Shop & Antiques. Bakelite CH 2 CH 2 OH OH H C 2CH 2 ~~~~ CH 2 CH ~~~~ H C 2CH 2CH CH OH OH OH ~~~~ OH CH 2 ~~~~ 15. They can resemble Bakelite, but Bakelite items of the same size are heavier. Highlight the strong and weak areas of your research. 0 volts for each one. The testing will quickly generate toxicity, toxicokinetic and other types of data to help inform decisions made about the potential health effects of PFAS. This might bring the value down to $35. . Elevated CK levels may indicate muscle injury or disease. There are two types of BTMs:. 50 milligrams per liter (mg/L) of blood. The article says that a lacquered piece will fail this test. EDIT: it will also always be vintage— and some even antiques. 15. Caulerpin, at a dose of 100 μmol/kg, p. Wipe the piece of jewelry in an inconspicuous area with a Q-tip loaded with 409. Bakelite is opaque due to fillers, can stand up to compression molding and does not require polishing. Question 4. Bake lite is poor conductor of electricity. Results. 00. S. “TEST/RESET” marking must be over the black switch (Fig. Buyers of the most powerful 409s could order either a wide-ratio four speed with a 2. Here's how to do it: Dip a cotton swab in 409 household cleaner and touch a small area of the piece, such as a back that won't be visible. When the phenol and formaldehyde are mixed together, the reaction of the the chemicals. . In others, with thoughtful analysis, the data can yield insights that could help leaders and educators allocate resources. As an example, Volume (m 3) = Mass (kg) ÷ Density (kg/m 3 )To clean it, use a soft bristled toothbrush, and gently scrub it off. If the material is indeed Bakelite then the cotton will turn a tell-tale yellow. " Can some one explain this test to me? Thanks!<P>Terry<P>-----<BR>Post subject: "409 test". 7-liter, 260-horsepower V-8 and how it gives vitality to the four-door sedan. 31. Is Galalith biodegradable?Bakelite also feels heavier. If a piece is lacquered, it may test negative with 409. Sec. Another good way to test for Bakelite is to hold it under hot water for about 30 seconds and then smell it. Plastic Fantastic no longer tests vintage plastic jewelry with Scrubbing Bubbles. valuable plastic jewelry. The higher the viscosity of the bitumen more time will be required for a quantity to flow out. 3—Coupon in retardant solution. The process of cleaning off the tarnish means that the exterior of the bangles will no longer pass a Simichrome/409 test. It was used to make a variety of objects that are now collectibles until about 1940. It drops to 85 mL/min/1. To be safe, wash the tested area immediately with warm water since it can damage the finish. 5 ml of 40% formaldehyde solution in a 100 ml beaker . Bakelite is opaque due to fillers, can stand up to compression molding and does not require polishing. com If the cotton swab turns a deep tan/tobacco brown you just might have Bakelite on your hands! The 409 Test - spray a small amount of 409 onto a cotton swab and rub it into a test spot on the item. . « Reply #4 on: February 05, 2007, 04:23:02 PM ». Measures 1 3/8" wide and is just slightly domed on the outside wall. 2) Expensive Transoptic Thermoplastics are utilized when transparency is required. 409 Test The 409 test is the easiest test for the beginner. Unless otherwise noted, contributors are members of or associated with Baker Tilly US, LLP. Bakelite is a thermosetting phenol formaldehyde resin, developed in 1907–1909 by Belgian chemist Dr. ASAE S207. Nevertheless, there is activity within the ESOP throughout the year that affects participant balances. 2. Bakelite Test with Simichrome or Formula 409. Celluloid predates bakelite and often has a very fragile, thin, and translucent appearance. 1-3-5. The hypothesis test takes all of the sample data, reduces it to a single value, and then calculates probabilities based on that value to determine significance. Doris, now I have 2 knife questions. Bakelite in solid colors is the most recognizable type even without employing testing measures. (d) Bakelite. 409 at 4,200 rpm (5) Speedway: 381 at 5,400 rpm: 409 at. Be careful of the "dirt" false-positive, that is also familiar to the 409 test. Posts: 2425. In 1927 the American Catalin Company began adding new. Collectors sometimes use the hot water method to test for authentic Bakelite (dip in hot water, rub and test for the smell of formaldehyde) or the 409 method (just a touch of Formula 409 cleaner or Simichrome brand polish on a cotton swab on a hidden area and the swab should turn yellow; rinse the item immediately). Lucite was created in the 1930s and has an entirely clear appearance. Klemens Schachl. It is light in weight and soft and warm to the touch. Using Formula 409 Cleaner To use, dampen a cotton swab with 409 and rub it gently on the inside of the item being tested. Chic Antiques. Linda Grossman, of Evelynne’s. When we use z z -scores in this way, the obtained value of z z (sometimes called z z -obtained) is something known as a test statistic, which is simply an inferential statistic used to test a null hypothesis. In any case remember, "use common sense". " Can some one explain this test to me? Thanks!<P>Terry<P>-----<BR>Post subject: "409 test". To use, dampen a cotton swab with 409 and rub it gently on the inside of the item being tested. Many simple necklaces and bracelets sell for $100 or less, but more elaborate. Utilisation du nettoyant Formula 409The Struers Webshop gives you access to your full range of consumables for materialographic sample preparation. or Best Offer. Filter by category. The thyroid gland uses TPO along with iodine to generate the thyroid hormones triiodothyronine (T3) and thyroxine (T4). High levels of TSH is an indicator that your thyroid is not producing enough hormones, like thyroxine (T4) and or triiodothyronine (T3). liver cancers. kathyg : posted on August 19, 2001 04:02:20 PMThe 409 test: If you have a piece and aren’t sure if it’s authentic, put some 409 house cleaner on a cotton swab and dab a small spot on the jewelry (somewhere on the back or not usually visible). 2 Waste Outlet. Spray a cotton swab with 409 cleaner and if it comes out yellow, it should be Bakelite. Sumitomo Bakelite. It’s important to realize copal, immature amber, also floats in salt water. Bakelite furniture is highly sought after in the AK world and brings a premium price along with it. . If the q-tip/kleenex turns a bit yellow, it''s bakelite. Show more. Plastic Fantastic no longer tests vintage plastic jewelry with Scrubbing Bubbles. Catalin is a brand name for a thermosetting polymer developed and trademarked in 1927 by the American Catalin Corporation of New York City, when the patent on Bakelite expired that year. Thk (mm). If you're concerned about long-term exposure to formaldehyde, you can order test kits online or hire a home air quality specialist near you. HDR brightness is a measure of how. For gunk removal start with Go-Jo or Goop. A higher antigen level corresponds to recurrence, and a lower antigen level corresponds to treatment response. 1B NAVSEAINST 4734. " Can some one explain this test to me? Thanks!<P>Terry<P>-----<BR>Two tests are commonly used to identify bakelite and catalin (please avoid the "hot needle damage non-bakelite items like celluloid): The Simichrome and 409 test: apply a small quantity of either 409 General Purpose Clean Simichrome metal polish to a cotton swab. Volume = Mass ÷ Density. True Bakelite balls will give off a strong chemical smell that is akin to formaldehyde.