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ASTM E287-94(1998)
Standard Specification for Laboratory Glass Graduated Burets
Automaticky přeložený název:
Standardní specifikace pro laboratorní sklo Absolvent Burets
NORMA vydána dne 10.10.1998
Informace o normě:
Označení normy: ASTM E287-94(1998)
Poznámka: NEPLATNÁ
Datum vydání normy: 10.10.1998
Kód zboží: NS-46181
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM E287-94(1998) :
Keywords:
Burets (laboratory), Laboratory apparatus-burets, burets-graduated laboratory glass, spec, ICS Number Code 71.040.20 (Laboratory ware and related apparatus)
Doplňující informace
| 1. Scope | ||||||||||||||
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1.1 This specification covers requirements for glass burets of precision and general-purpose grades suitable for laboratory use. 1.1.1 Class A -Each buret of precision grade may be marked with the letter "A" to signify compliance with applicable construction and accuracy requirements in Tables 1 and 2. Each buret may be marked with a permanent serial number at the option of the manufacturer. 1.1.2 Class B -General purpose burets are of the same basic design as Class A burets. However, volumetric tolerances for Class B burets shall be within twice the specified range allowed for Class A burets. These burets need not be marked with their class designation or serial number. See Tables 1 and 3 for tolerances and dimensional requirements. Note-The Twelfth General (International) Conference on Weights and Measures redefined the litre as a "special name for the cubic decimetre," but agreed to permit continuance of the terms litre, millilitre, and mL, except in association with measurements of the highest precision. For volumetric glassware the difference between the old and new meanings of litre is negligible. Therefore, either mL or cm may be marked on ware covered by this standard. |
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| 2. Referenced Documents | ||||||||||||||
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