Laboratory Flasks
Laboratory flasks are containers which are classified as glassware. They are a number of shapes and sizes with wider bodies or narrower tubular sections at the top or neck. They are specified by how much volume they hold and this is typically given in millilitres. I Reaction flasks are spherical with round bottoms and joints at the neck to connect to other pieces of apparatus. They are made of thick glass and can withstand high pressure, even vacuums. Multiple neck types have up to five necks for complex processes and multiple reagents. Distillation flasks have one narrow neck and thinner glass since this is easier to heat. Some varieties can be test tube or pear-shaped. Reagent flasks are flat-bottomed, cannot withstand high pressure and some have a glass stopper in the neck. Erlenmeyer ones are shaped like a cone and are popular because of their low price. The volumetric ones are used to prepare liquid volumes of high precision while the Dewar flask is double-walled with a vacuum between. Flasks are used for making solutions, holding or collecting samples and volumetrically measuring chemicals. For chemical reactions, they are necessary for mixing, heating, cooling, dissolving, precipitation, distillation or analysis.
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11MM PE-CAP BL. HOLE SOFT SIL/PTFE 55ø (1 Supplier)
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11MM PE-CAP BLUE HOLE REDRUBBER/PTFE (1 Supplier)
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11MM PECAP GREEN HOLE PTFE/SIL/PTFE (1 Supplier)
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11MM PE-CAP TR. HOLE REDRUBBER/PTFE (1 Supplier)
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11MM PE-CAP, TR. HOLE, SILICONE/PTFE (1 Supplier)
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11MM PE-CAP TR. HOLE SOFT SIL/PTFE 55ø (1 Supplier)
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11MM PTFE ONLY SEAL (1 Supplier)
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11MM RED CRIMP SEALS PTFE/RED RUBBER (1 Supplier)
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11 MM RED SNAP IT SEALS PTFE/SIL SPT (1 Supplier)
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11MM SEPTA PTFE/BUTYL/PTFE 55ø 1.3MM (1 Supplier)
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11MM SEPTA SILICONE/PTFE 45ø 2.0MM (1 Supplier)
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11MM SILICONE/PTFE SEAL 1.5MM THICK (1 Supplier)
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11MM SNAP CAP, BLUE, PTFE SEAL (1 Supplier)
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11MM SNAP CAP, RUBBER/PTFE SEAL, BLACK (1 Supplier)
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11MM SNAP CAP, RUBBER/PTFE SEAL, YELLOW (1 Supplier)
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11MM SNAP CAP, SILIC/PTFE SEAL, BLACK (1 Supplier)
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11MM SNAP CAP, SILIC/PTFE SEAL, BLUE (1 Supplier)
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11MM SNAP CAP, SILIC/PTFE SEAL, YELLOW (1 Supplier)
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11MM SNAP CAP, SIL/PTFE CUT SEAL, GREEN (1 Supplier)
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11MM TYPE 6 RUBBER/PTFE SEAL (1 Supplier)
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12ML SCREW NECK VIAL 15-425 (1 Supplier)
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12ML SCREW NECK VIAL, 15-425 THREAD, AMB (1 Supplier)
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1.2ML SNAP CAP VIAL - CLEAR - ULTRA HIGH (1 Supplier)
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1.2mL ULTRA HIGH RECOVERY VIALCLEAR SCR (1 Supplier)
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12MM PTFE SEAL (1 Supplier)
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