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We have for sale a partial box of Ten 9990-75 Pyrex watch glasses in original packaging. All appear to be new old stock with no evidence of use. The packaging and the paper have been generally undisturbed. We purchased from a long-established laboratory that was consolidating with another location.
Designed for use as a beaker cover. Ribs are molded into the glass. Allows reflux of digestate and escape of excess vapor. Meets EPA requirements for methods 3005, 3010, and 3020.
Marked: Pyrex ENGLAND.
Measures: watch glasses: 75 mm diameter; box : 6” x 6” x 5.5”
Condition: The watch glasses are in new condition. Please see all photos as they are part of the description. No visible chips, discoloration or cracks. Box has minor staining.
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RiverRat Antiques LLC
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RiverRat Antiques LLC