Ag-Fix test strips: Quick and easy determination of silver and pH. Features: • During operation of a fixing bath it is necessary to check the silver content as well as the pH in regular intervals to insure proper operation. • A decrease in fixing capacity is noted as an increase in silver concentration or an alteration of the pH value. • The convenient Ag-Fix test strips from MACHEREY-NAGEL allow a simultaneous semi-quantitative determination of silver and the pH value in photographic solutions. • With these strips two paper zones are sealed onto the lower end of a plastic strip, one for the determination of the silver concentration and one for pH measurement. • After dipping the test strips in the test solution the colours of the test zones are compared with the colour scale on the container. • Ag-Fix comes in packages of 100 test strips. • The length of the strips has been chosen for safe and convenient handling. Specifications: • Presentation: Box of 100 test strips • Colour reaction: Ag+ : ochreous → brown; pH : yellow → blue • Gradation Argent: 0,5 · 1 · 2 · 3 · 5 · 7 · 10 g/l Ag+ ; pH 4 · 5 · 6 · 7 · 8