How to determine quality of wax?
Waxes are typically quality controlled with regard to the following physical properties: melt point, oil content, penetration, viscosity and color.
What is needle penetration test?
Needle penetration is a measurement of hardness. Hardness may have a significant effect upon other physical properties. 1. Scope. 1.1 This test method covers the empirical estimation of the consistency of waxes derived from petroleum by measurement of the extent of penetration of a standard needle.
What is needle penetration in wax?
penetration (wax) – measure of the hardness of a petroleum wax, utilizing a penetrometer. Penetration is reported as the depth, in tenths of millimeter, to which a standard needle penetrates the wax under conditions described in test method ASTM D 1321.
How is wax hardness measured?
* Create a flat surface on the wax block to be tested by holding it against a waxing iron. * Let the wax cool to room temperature (67 deg F). * Press the hardness meter tip into the wax and hold for 5 seconds and record the reading. * Measure each specimen 5 times and determine the average.
How do I know if my wax is CRC?
The color of the wax or concentrate is usually dictated by the freshness and quality of the material that is being extracted. Older material that is at a lower quality will come out as darker concentrates compared to fresh material that is of a higher quality.
Why does my wax taste weird?
Anyone who’s accidentally tasted ear wax knows it has an awful, sour flavor. Otolaryngologist Dr. Seth Schwartz told INSIDER that ear wax tends to be acidic. We know acidic foods also taste sour, so ear wax’s distinct flavor makes sense.
What is needle penetration force?
The cannula was inserted into the foil at a 90° angle. Two values were recorded for each needle tested: Peak penetration force – the maximum force required to insert the needle into the substrate. This force corresponds to the maximum force value in the force profile (in grams).
How much time in which penetration of needle is recorded?
5 seconds
Basic Procedure Measure the penetration of a standard needle into the asphalt binder sample under the following conditions: Load = 100 grams. Temperature = 25° C (77° F) Time = 5 seconds.
What is congealing point of wax?
congealing point – the temperature at which molten wax ceases to flow, as measured by test method ASTM D 938; of importance where storage or application temperature is a critical factor.
Which instrument is used for hardness?
hardness tester, device that indicates the hardness of a material, usually by measuring the effect on its surface of a localized penetration by a standardized rounded or pointed indenter of diamond, carbide, or hard steel.
How do you know if you have CRC?
A change in bowel habits, such as diarrhea, constipation, or narrowing of the stool, that lasts for more than a few days. A feeling that you need to have a bowel movement that’s not relieved by having one. Rectal bleeding with bright red blood. Blood in the stool, which might make the stool look dark brown or black.
What is the use of wax hardness test?
Widely used for paraffin waxes. Measures when a wax ceases to flow. Generally used on waxes that don’t show a melting plateau e.g. petrolatums and microcrystalline waxes. Measures the hardness of wax.
What do the measuring values of wax mean?
Measures when a wax ceases to flow. Generally used on waxes that don’t show a melting plateau e.g. petrolatums and microcrystalline waxes. Measures the hardness of wax. Usually determined at 77°F (25°C) or 100°F (40°C). Higher values indicate softer wax. The amount of oil in wax. Indicates degree of refining.
Where can I find additional information about wax test methods?
For additional information regarding any one of these test methods, please go to ASTM’s website. Provides information on temperature at which most of a given wax changes from a solid to a liquid.
What is the Saybolt color scale for wax?
The Saybolt color scale ranges from +30 (colorless) to -16 (medium yellow/brown) Visual comparison of wax color (molten) against glass color standards.