Reviews Dyeing Finishing Testing Instrument

Gold Testing Solutions Kit 10k 14k 18k 22k Scratch Stone

...ING SOLUTION METHOD: This acid testing method is ideally used on unfinished gold, silver and platinum pieces, due to the harsh nature of the solution that could potentially damage an already finished item.
however, if testing fine jewelry or other finished items, choose an inconspicuous spot so as not to compromise finishing.
HOW TO USE THE ACID TESTING KIT: To test for karat content or purity, scratch the item on to the test stone leaving a visible deposit and place a small drop of the acid over top of deposit.
if gold is the same karat or higher the deposit will not be affected.
if the deposit is of lower karat, the deposit will dissolve.
for platinum and silver repeat the same process.
if the material is platinum, the deposit will not be affected.
if silver material is of high quality, the solution will turn red.
SPECIFICATIONS: Testing Stone Dimensions: 2 x 1.5 x 0.25 inches.
Exercise extreme caution when opening and using.
Proper protective gloves and eyewear are highly recommended.

This digital pen instrument is an ideal instrument for any aquarium, fishery, swimming pool, school laboratory, food and beverage, etc. Moreover, this digital water quality tester is ideal for all basic water testing applications..
Due to its advanced microprocessor technology, the product is efficient and accurate..
The value of water quality inspection pen can show the impurity content. The larger the value, the greater the impurity content.
on the contrary, the less impurity content..
The factors that affect the test value are: the temperature of the water (the tester cannot test high-temperature water, such as boiled water).
the flow rate of the water (the tester cannot be used to test flowing water) Hold function: save the measurement for easy reading and recording..
Auto-off function: After 10 minutes of non-use, the meter can be turned off to save battery power..

The peghead overlay is the face of your stringed instrument: the finishing touch of quality.
Thickness-sanded to 3/32" (2.38mm), these veneers are large enough for guitar, banjo or mandolin.
This ebony veneer measures 4" x 8" x 3/32" (106mm x 203mm x 2.38mm).

...nductivity meter, TDS meter, Salinity meter or D.O. meter as user needed..
We design different color connector on the meter, user only needs to screw on the probe with the same color, and then get the measuring reading accurate and fast..
User could change the probe or screw on the 86031 Combo Water Quality Measuring Instrument easily. And in order to avoid broken by the stone or particle attacking in the measuring environment, we have developed the specific anti-collision cap on each probe. So the 86031 Combo Water Testing Meter would be the best tool for all professional measuring purposes, including the Aquaculture, Aqua farm, LAB, swimming pool or water treatment business, or other related industry, no matter the fresh or sea water..
AZ 86031 Combo Water Meter- pH/Conductivity/Salt/TDS/D.O was being designed and manufactured by AZ Instrument, a well experienced manufacturer for pH EC Meter..
Large LCD to display multiple parameters simultaneously: pH, Conductivity or TDS or Salinity, Dissolved oxygen, Temperature (by using different probes).