ASTM E1189-00(2010)..
ASTM E123-02(2012)..
ASTM E124-94(2010)..
ASTM E1272-02(2012)..
ASTM E1273-88(2013)..
ASTM E1293-02(2012)..
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ASTM E287-02(2012)
Standard Specification for Laboratory Glass Graduated Burets
Automaticky přeložený název:
Standardní specifikace pro laboratorní sklo Absolvent Burets
NORMA vydána dne 1.11.2012
Informace o normě:
Označení normy: ASTM E287-02(2012)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2012
Kód zboží: NS-46179
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM E287-02(2012) :
Keywords:
burets, glass, graduated, ICS Number Code 71.040.20 (Laboratory ware and related apparatus)
Doplňující informace
| 1. Scope | |||||||
|
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
|
|
Graduated Scale |
|
|
|||
|
Capacity, |
Subdivision, |
Class A |
Class B |
Distance, Top |
Class A |
Class A |
Class B |
|
10 |
0.05 |
350 to 450 |
250 to 450 |
30 to 75 |
0.5 |
0.02 |
0.04 |
|
25 |
0.1 |
350 to 450 |
250 to 450 |
30 to 75 |
1 |
0.03 |
0.06 |
|
50 |
0.1 |
500 to 600 |
500 to 600 |
40 to 100 |
1 |
0.05 |
0.10 |
|
100 |
0.2 |
550 to 650 |
550 to 650 |
40 to 100 |
2 |
0.10 |
0.20 |
Length
Graduated,
cm
Time of Out-
flow Not
Less Than, s
Length
Graduated,
cm
Time of Out-
flow Not Less
Than, s
15
30
45
80
20
35
50
90
25
40
55
105
30
50
60
120
35
60
65
140
40
70
70
160
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
Capacity, mL
Time of Outflow Not Less
Than, s
10
25
25
30
50
50
100
90
1.1.3 Product with a stated capacity not listed in this standard may be specified Class A Tolerance when product conforms to the tolerance range of the next smaller volumetric standard product listed in Table 1.
