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    สินค้า จำนวน
× Sodium chloride 99%, AR
× Sodium hydroxide
× 105033 | Potassium hydroxide
× 105432 | Ammonia solution 25%
× 109435 | Buffer solution
× Acetone , AR
× pH 4.01 Calibration Solution (500 mL)
× 110983 | N,N-Dimethylformamide