When it comes to maintaining the quality of your photography equipment, the Hypo-Check Chemical Test for Exhausted Film and Paper Fixers, 4 Oz is an effective and efficient solution. This high-quality product is specifically designed to test for exhaustion due to silver saturation in film and paper fixers, ensuring reliable and durable performance. With just one or two drops, this potent solution can accurately determine the condition of your fixer. If the fixer is still in good condition, the Hypo-Check Chemical Test will not cause any harm to the bath. However, if the addition of Hypo-Check results in a cloudy condition, it indicates that the bath is exhausted and the fixer should be discarded. Manufactured by the reputable brand, Edwal, known for its commitment to producing top-tier products for the photography industry, this 4 Oz bottle provides up to 800 tests. This makes it a cost-effective choice for both professional photographers and hobbyists alike. Incorporate the Hypo-Check Chemical Test into your routine to ensure the longevity and optimal performance of your film and paper fixers.