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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17MM SEPTA SILICONE WHITE/ALUMINIUM FOIL (1 Supplier)
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17MM SEPTA SILICONE WHITE/PTFE BLUE 55 (1 Supplier)
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17MM SEPTA SILICONE WHITE/PTFE RED 45ø (1 Supplier)
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182CM TC FILTER CAP FLASK - HIGH PROFILE (1 Supplier)
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182CM TC SUSPENSION FLASK - HIGH PROFILE (1 Supplier)
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18MM COMBINATION SEAL: MAGNETIC UNIVERSA (1 Supplier)
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18MM GREEN PP SCREW CAP UNWADDED (1 Supplier)
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18MM MAGN. SCREW CAP HOLE SIL/ALU FOIL (1 Supplier)
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18MM MAGN.SCREW CAP, OPEN TOP, VITON, 1.0MM (1 Supplier)
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18MM MAGN.SCREW CAP, SILICONE/PTFE, 1.3MM (1 Supplier)
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18MM MAGN SCREW CAP SIL/PTFE PRE-CUT STA (1 Supplier)
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18MM PP-SCR.CAP, BLCK, SILICONE/PTFE, 1.7MM (1 Supplier)
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18MM PP-SCR.CAP, BUTYL R./PTFE GR., 1.6MM (1 Supplier)
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18MM PP SCREW CAP BLACK CLOSED TOP (1 Supplier)
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18MM PP-SCREW CAP BLACK HOLE SILIC./PTFE (1 Supplier)
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18MM PP-SCREW CAP CL TOP SIL/PTFE (1 Supplier)
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18MM PP SCREW CAP HOLE SILICONE /PTFE 45 (1 Supplier)
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18MM SEPTA SILICONE/PTFE 45ø 1.9MM (1 Supplier)
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19.5MM SEPTUM SILICON WHITE/PTFE RED (1 Supplier)
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1ML NECKLESS VIAL FOR WATERS 96 W/PE CAP (1 Supplier)
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1ML PP NECKLESS VIAL F.WATERS 96, PE CAP (1 Supplier)
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1ML PP SHELL VIAL 40X8MM CLEAR, PE PLUG (1 Supplier)
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1MPULE 5ML GLS CLR PRE-SCORED (1 Supplier)
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20ML AMBER GLASS EPA VIAL (1 Supplier)
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20ML CLEAR GLASS EPA VIAL (1 Supplier)
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