There is some yellow and brown coloring in the outer wells in my reagent disc. Is this Normal?
答:
Yes, all discs will have some coloring in the bottom of the wells. This is just the dried chemical reagent for each test factor. When filled with water...
广告Shop Water Quality Testing Supplies, From Portable Meters To Standards & Solutions. Optimize Your Water Testing Workflow With EPA-Compliant Equipment & Test Kits. Buy Now.
Wastewater Industries · Over 65 Years Of Service · Vaccine R&D · Virus Testing
广告Shop Suppliers in Every Industry at Grainger®. 30-Day Satisfaction Guaranteed. Count On Us 24 Hours a Day, 7 Days a Week for Expert Knowledge and Support.
Service catalog: 24/7 Support, Find a Branch, Mobile App