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Question about glassware measurements.
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Topic: Question about glassware measurements. (Read 2343 times)
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Dhisbdj
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Question about glassware measurements.
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on:
October 29, 2020, 04:56:50 PM »
Why do different glassware give different measurements when measuring the same amount ? I measured 15 ml on volumetric flask but got less using graduated cylinder.
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Borek
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I am known to be occasionally wrong.
Re: Question about glassware measurements.
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Reply #1 on:
October 29, 2020, 08:23:40 PM »
A lot depends on the glass accuracy and technique used. Not knowing what and how you did, it is impossible to comment.
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ChemBuddy
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jeffmoonchop
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Re: Question about glassware measurements.
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Reply #2 on:
October 30, 2020, 12:46:53 PM »
Cylinders shouldn't be used if accuracy is needed. Volumetrics are more accurate. But you can buy different grades of glassware, Ideally the volumetric should be A rated. And make sure your meniscus is sitting on the line.
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jeffmoonchop
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Re: Question about glassware measurements.
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Reply #3 on:
October 30, 2020, 12:47:48 PM »
Also if you pour the liquid from the volumetric into the cylinder, you'll leave some behind and get less in the cylinder.
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Question about glassware measurements.