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Code: 102069

Volumetric flask, clear glass, borosilicate 3.3, 20 ml, NS 10/19, with hollow glass stopper, blue labelling, class A, pack of 1




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 All clear volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. Batch-specific certificate of conformity can be supplied on request. 


























Capacity (ml)

Standard ground joint NS*

Tolerance (± ml)

PK

5

10/19

0.040

1

10

10/19

0.040

1

20

10/19

0.040

1

25

10/19

0.040

1

50

14/23

0.100

1

100

14/23

0.100

1

200

14/23

0.150

1

250

14/23

0.150

1

500

19/26

0.250

1

1000

24/29

0.400

1

2000

29/32

0.600

1


* The first figure relates to the upper diameter of the standard ground joint, while the second figure specifies its length.
Glass compositions :
• Silicon Dioxide (SIO2) – 81% - Hydrolytic resistance at 98
oC – ISO 719

• Boron Oxide (B2O3) – 13% - 121 ºC thermal resistance – ISO 120

• Sodium/ potassium oxide - (Na2O/k2O) – 4% - Acid resistance – DIN 12116

• Aluminum oxide (AI2O3) – 2% - Alkalis resistance – ISO 695

• Hydrolytic resistance at 98 oC  – ISO 719

• 121 ºC thermal resistance – ISO 120

• Acid resistance – DIN 12116

• Alkalis resistance – ISO 695

• Linear expansion coefficient – 32,5 x 10-7 ºC.

 



PRICE:
$ 22.72
VAT included

On Request

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