Reagent Papers

These reagent papers can be used to determine the presence of a certain substance in a sample. They are available either in strips or in reels.

• Biophan G are used for the determination of of the concentration of glucose in urine and Biophan E for the concentration of protein in urine.
• Potassium Iodide Starch Paper for the detection of nitrite and for testing the final product for diazotization (diazo paper). They are generally suitable for detecting organic substances that release iodine. The color changes from gray to dark purple.
• Lead Acetate Paper is for the detection of sulfur containing compounds. Sulfur is present if the paper turns black or brown if the concentration is low.
• Phosphate Test Paper
  For the detection of alkaline phospatase in milk.
  - When about one-third of the strip including the sheath is dipped into milk, the paper turns yellow after a few seconds if the milk contains alkaline phosphatase.
  - When raw, i.e. non-pasteurized milk or pasteurized milk is used as control, the sample will turn yellow if the milk was not heated sufficiently. If the color dees not change, this is positive proof that the milk was subjected to short-term heating.