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A laboratory must retain a historic record of retention times for the surrogate and all the target anions to provide evidence of an analytical columns vitality
Aprotic solvents
AS10kCU50-1
000 ppm solutions chemically stable for years in 5 - 7% HNO3 / LDPE container
See screw closures 7020044
CHROMABOND QuEChERS Mix V, Clean-up, EN 15662, 15 mL Centrifuge tubes C4CP41412DG A laboratory must retain aAdvantages of QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe ) products in comparison with classical clean up methods Easy to handle and time saving procedure as well as no need for glassware (convenient and economical). Low consumption of solvents and no need for chlorinated solvents (environmentally friendly). Broad range of pesticides can be detected and rugged method with high and safe recovery rates (reliable and good performance).
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