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สารละลายมาตรฐานความขุ่น 20 NTU
1 × ฿2,033.00 -
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HI93754C-25 High Range COD Reagent (0 to 15000 mg/L)
1 × ฿3,103.00
Subtotal: ฿5,136.00
Laboratory bench safety shield
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