Repairs to scientific glassware should be attempted with caution. Assuming the glassware was broken in use, or has been used in the laboratory at some point in time, it would be wise to assume the glass has some chemical residue on or in it. Do not attempt to repair any glass until it has been cleaned to your satisfaction. Many glassblowers as policy will not accept glassware for repair until the user has cleaned the glass of all chemical and grease residue. Remember, as you heat the glass any outgassing that occurs is deposited directly into your mouth via the blowhose assembly.

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