ChemSee-Foods has available simple, low-cost detectors for nitrates and nitrites in food, drink and animal feedstock.
ChemSee-Foods' detector for Nitrates/Nitrites can also be used to test if milk has been adulterated by Nitrates/Nitrites. Recent regulations has reduced the amount of Nitrites are allowed to be present in Milk.
These detectors respond with a simple color change to the presence of nitrates and nitrites.