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น้ำยามาตรฐานสอบเทียบ ค่ามาตรฐานความเค็ม
1 × ฿1,444.50 -
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HI983302N EC Indicator up to 9.99 mS with Electrode GRO'CHEK
1 × ฿5,885.00
Subtotal: ฿7,329.50
Leitfähigkeitslösung 12880 µS/cm zur Kalibration.
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