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฿2,033.00

COMBO pack - Buffer solutions pH 7:01 + TDS 1500 mg / L @ 25 ° C - SQ - 10 bags each of 20 ml, ± 0.01 pH, standard quality

฿3,745.00

Standard-Leitfähigkeitslösung 1413 µS/cm, 3.78L Kanister (Gallone)