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น้ำยามาตรฐานสอบเทียบ ค่ามาตรฐานความเค็ม
1 × ฿1,444.50 -
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HI70038P - 6.44 g/l (ppt) TDS@25°C - 25x20ml
1 × ฿1,765.50
Subtotal: ฿3,210.00
Leitfähigkeitslösung 12880 µS/cm zur Kalibration.
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