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Flasks, round bottom, narrow or wide neck, with flared rim

Supplier: DURAN Group
DURAN®, borosilicate glass 3.3, clear.

  • Very good chemical resistance
  • High temperature resistance
  • Minimal thermal expansion, giving relatively high resistance to temperature changes

Marked with capacity and a white labelling area. Flasks with neck external diameter larger than 65 mm have reinforced rims.

Certifications: ISO 1773 (narrow neck)
DIN EN ISO 24450 (wide neck)



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Narrow neck
Capacity Height Ø ext. Neck Ø ext. Pk VWR Catalog Number Quantity
50 95 51 26 1 214-2105
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100 110 64 26 1 214-2110
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250 144 85 34 1 214-2115
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500 168 105 34 1 214-2120
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1000 200 131 42 1 214-2125
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2000 260 166 42 1 214-2130
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3000 260 185 50 1 214-2135
4000 290 207 52 1 214-0146
5000 305 223 50 1 214-2145
6000 355 236 51 1 214-2150
10000 380 279 65 1 214-2155
12000 380 295 65 1 214-0427
20000 515 345 76 1 214-2160

Wide neck
Capacity Height Ø ext. Neck Ø ext. Pk VWR Catalog Number Quantity
50 105 51 34 1 214-2205
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100 110 64 35 1 214-2210
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250 143 85 51 1 214-2215
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500 168 105 50 1 214-2220
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1000 200 131 50 1 214-2225
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1000 200 131 65 1 214-2226
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2000 240 165 76 1 214-2231
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2000 240 166 50 1 214-2230
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3000 260 185 65 1 214-2235
4000 290 206 76 1 214-2240
5000 310 223 65 1 214-2245
6000 330 236 89 1 214-2251
6000 330 236 65 1 214-2250
10000 420 279 89 1 214-2255
20000 520 345 89 1 214-2260

Cork rings for round bottom flasks
For Ø ext. Pk VWR Catalog Number Quantity
10 - 100 ml flasks 80 5 217-1000
250 - 500 ml flasks 110 5 217-1001
500 - 1000 ml flasks 140 3 217-1002
2000 ml flasks 170 3 217-1003
4000 ml flasks 210 2 217-1004
6000 ml flasks 240 2 217-1005
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