Description :
Tenders for Proficiency Testing Samples For Laboratories - Waste Water Havy Metals , Waste Water Biological , Waste Water Herbicide , Waste Water Pesticides 1 , Waste Water Pesticides 2 , Waster Water Physicochemical 1 , Waster Water Physicochemical 2 , Waster Water Physicochemical 3 , Surface Or Ground Water Heavy Metals 1 , Surface Or Ground Water Heavy Metals 2 , Surface Or Ground Water Biological , Surface Or Ground Water Herbicide , Surface Or Ground Water Pesticides 1 , Surface Or Ground Water Pesticides 2 , Surface Or Ground Water Physicochemical 1 , Surface Or Ground Water Physicochemical 2 , Surface Or Ground Water Physicochemical 3 , Soil And Solid Wastes Sludge Slurry Powder Heavy Metals , Soil And Solid Wastes Sludge Slurry Powder Physicochemical 1 , Soil And Solid Wastes Sludge Slurry Powder Physicochemical 2 , Air Stack Emissions 1 , Air Stack Emissions 2 , Air Stack Emissions 3 , Air Ambient Air 1 , Air Ambient Air 2 , Air Ambient Air 3 , Air Ambient Air 4 , Air Ambient Air 5