The ammonia 0-100ppm test strip technically has two test pads put together. One pad absorbs the dissolved ammonia and converts it to a gas, which the second pad registers and then changes color when dipped [...]
The Lead Acetate paper detects the presence of sulfur. The strip works best when wet (when testing for sulfur gas - the gas absorbs into the wet paper) or dipped into a test solution. The [...]
Various types of sulfites can be used – sulfite, bisulfite, and metabisulfite. Our original color chart was developed to measure sulfite ions in ppm (from sodium sulfite standards), however, we have checked standards and found that [...]
Sulfites (Sulfur Dioxide) in wine are present in two forms – free and bound. The Sulfite test strips only detect free sulfite. The buffer agents on the test pad convert the free sulfur dioxide to [...]