Pyrex Brand 9990 Watch Glasses

Ribbed, beaker cover
Use these PYREX watch glasses to perform evaporations and as a cover for your beakers. Ribs are molded into the glass, permitting reflux of digestate and escape of excess vapor. Meets EPA requirement for methods 3005, 3010, and 3020.
$108.00 - $183.00USD / Case of 12

3 variations of this product are available.

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3 PRODUCT OPTIONS
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Fits Bottle / Beaker Size (mL) Material Outside Diameter (OD) (cm)
Availability Pricing
Pyrex 9990-75 Brand 9990 ribbed watch glass; 75 mm, case of 12
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EW-34508-21 Mfr # 9990-75
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250 Glass 7.5
$108.00USD / Case of 12
Pyrex 9990-100 Brand 9990 ribbed watch glass; 600 mm, case of 12
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EW-34508-22 Mfr # 9990-100
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600 Glass 10
$132.00USD / Case of 12
Pyrex 9990-125 Brand 9990 ribbed watch glass; 1000 mm, case of 12
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EW-34508-23 Mfr # 9990-125
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1000 Glass 12.5
$183.00USD / Case of 12
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