Hiển thị 373–384 của 517 kết quả
Sulfide Test photometric, 0.020-1.50 mg/L (S2-)
Sulfate Test Method: photometric 5 – 300 mg/l SO₄²⁻ Spectroquant®
Sucrose (Saccharose) Test Method: reflectometric with test strips and reagent 0.25 – 2.50 g/l Reflectoquant®
Silicate (Silicic Acid) Test Method: photometric 0.011 – 10.70 mg/l SiO₂ 0.005 – 5.00 mg/l Si Spectroquant
Silica gel 60 HF₂₅₄ for thin-layer chromatography
SeQuant® ZIC-HILIC™ 5µm,200Å 150 x 4.6 mm PEEK-lined stainless steel column, suitable for HPLC
Rectangular cells 50 mm Spectroquant«
Rectangular cells 20 mm
Rectangular cells 10 mm
Quaternary Ammonium Compounds Method: colorimetric with test strips 10 – 25 – 50 – 100 – 250 – 500 mg/l MQuant®
Purospher® STAR SI (5 µm) LiChroCART® 250-4.6
Purospher® STAR RP-8 endcapped (5µm) LiChroCART® 150-4.6
