Best High Vacuum Valve

Laboy Glass 1000mL Pear-Shaped Schlenk Flask Tube Kjeldahl-Style Reaction Storage Air-Free with High Vacuum Valve & 24/40 Joint Lab Glassware

DESIGN----This Kjeldahl shape schlenk flask consists of a pear-shaped flask facilitates heating and stirring.It has a sidearm fitted with high vacuum valve connecting to a vacuum or inert gases source.The top ground glass joint is used to attach the flask to other lab glassware apparatus ,or stopped by a penney head stopper,rubber septum,permitting easy transfer of liquids or solids..
USE----Schlenk flasks are indispensable laboratory glassware used in air-sensitive chemistry to conduct air-sensitive reaction.Comparing to non-air-sensitive reactions reaction, this schlenk flask features a 0-12mm high vacuum valve connecting with a schlenk line and controlling the access to inert gas or vacuum. In a reaction setup,the schlenk flask may use with an addition funnel,reflux condenser,magnetic stirring shaft and bars.For filtration,a schlent frit is required..
DIMENSIONS----This pear-shaped schlenk flask,modified schlenk tube, capacity of 1000mL,with 0-4mm high vacuum valve which is easier to clean and won't leach grease into your reaction mixture.With 24/40 top taper outer joint allowing material to be added to a flask or attaching a reflux condenser for reaction..
HEAVY WALL ---This schlenk flask is heavy-wall designed , made by hand-blowing according to AS....

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JRLGD 50ml Glass Schlenk Storage Tube Flask with 0-8mm High Vacuum Valve, Outer Diameter×Height 28×140mm

-【Specifications】Capacity of 50ml, storage tube outer diameter×height 28×140mm.
-【Material】Made of high borosilicate glass, it has the advantages of light weight, low thermal expansion coefficient, strong thermal shock resistance, can withstand 450 ° C high temperature for a long time, clear and transparent, uniform quality, widely used in optics, optoelectronics, photonics and Analysis equipment and other fields..
-【Suitable for】Schlenk flask is an indispensable laboratory glassware for reaction to air-sensitive chemical reactions. Compared with non-air-sensitive reactions, the schlenk flask has a 0-4mm high vacuum valve, which is connected to the schlenk line and controls the channel inert gas or vacuum..
-【Uniform wall thickness, durable】Low expansion rate, uniform wall thickness, strong and durable. High vacuum valve on top, can be evacuated or filled with gas..
-【Various models】We also provide a variety of other types of schlenk flask to meet your different needs..

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JRLGD 10ml Glass Schlenk Storage Tube Flask with 0-4mm High Vacuum Valve, Outer Diameter×Height 22×55mm

-【Specifications】Capacity of 10ml, storage tube outer diameter×height 22×55mm.
-【Material】Made of high borosilicate glass, it has the advantages of light weight, low thermal expansion coefficient, strong thermal shock resistance, can withstand 450 ° C high temperature for a long time, clear and transparent, uniform quality, widely used in optics, optoelectronics, photonics and Analysis equipment and other fields..
-【Suitable for】Schlenk flask is an indispensable laboratory glassware for reaction to air-sensitive chemical reactions. Compared with non-air-sensitive reactions, the schlenk flask has a 0-4mm high vacuum valve, which is connected to the schlenk line and controls the channel inert gas or vacuum..
-【Uniform wall thickness, durable】Low expansion rate, uniform wall thickness, strong and durable. High vacuum valve on top, can be evacuated or filled with gas..
-【Various models】We also provide a variety of other types of schlenk flask to meet your different needs..

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Chemglass Rotary Evaporator Flask Only, 5L

With reflux valve for distillation under total reflux.
Unique design vapor seal maintains vacuum.
5L Evaporating Flask Capacity with flat flange.
With feeding valve and bottom drain valve for continuous operation without interruption of vacuum.

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Vacuum Storage Bags with Electric Air Pump, 20 Pack (4 Jumbo, 4 Large, 4 Medium, 4 Small, 4 Roll Up Bags) Space Saver Bag for Clothes, Mattress, Blanket, Duvets, Pillows, Comforters,Travel, Moving

【20 Pack in 5 Different Size】We provide 20 pack Vacuum Storage Bags in 5 different sizes, 4 Jumbo, 4 Large，4 Medium, 4 Small, 4 Roll Up Bags (without cap), which allows you to safely store a large amount of your different sizes out-of-season clothing or bedding in your closets, drawers or under the bed. such as duvets, quilts, pillows, blankets, coats, sweaters, jackets, stuffed toys, towels, T-shirt, dress and so on.
【Electric Air Pump for Easy and Fast Deflating】Our Vacuum Compression Bags comes with an Electric Air Pump, unlike the hand pump, it is much easier and faster to suck the air out of the vacuum bags, you don't need to use your strength to pull and push the pump again and again to take the air out of the bags. Just plug in the socket and then put it on the valve and turn on, then just wait for a few seconds and will done. Also It is an ideal option if you don't have a vacuum cleaner.
【Upgraded Two Ways to Compress The Bags】This new 2-in-1 valve not only allows you to take the air out of the bags using the electric pump or hand pump, and also allow you to compress the bags directly by your hand without using pump. Just turn the air....

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SEOH Plastic Vacuum Desiccator 250mm

【Vacuum storage】suitable for vacuum drying and storage of biochemical reagents, medicines, optical lenses, precision components, seeds, cultural relics and other items..
【High-quality materials】high-quality polycarbonate injection molding, high-quality silicone rubber O-ring seals between the upper and lower parts of the vessel, better sealing performance..
【Long vacuum maintenance time】30 days after vacuuming, the degree of vacuum changes less than 6%. Dry storage under vacuum can greatly extend the storage time..
【easy to observe the internal situation】the transparent container is convenient to observe the storage state of the internal items at any time. The valve core is precisely processed by metal materials, and the air flow rate is gradually regulated from small to large..
【After-sales service】If you have any questions, please feel free to contact us, we will try our best to provide you with better service..

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PTFE Oil Seal Set for USA Lab 20L RE-1020 Rotary Evaporator - USAlab

With reflux valve for distillation under total reflux.
Unique design vapor seal maintains vacuum.
5L Evaporating Flask Capacity with flat flange.
With feeding valve and bottom drain valve for continuous operation without interruption of vacuum.

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Appion MGAVCT 1/4" MegaFlow Vacuum-Rated Valve Core Removal Tool

The Only Vacuum Certified Valve Core Removal Tool!.
Easily remove access valve cores for full, unrestricted flow.
MegaSeal cap made from aircraft aluminum and molded neoprene gasket, reliably seals under pressure and vacuum.

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Portable Vacuum Sealer Machine Electric Pump Automatic Sealer for Vacuum Food Storage Sous Vide Cooking with 5 PCS Food Saver Vacuum Sealer Bags & 1 Wine Saver Stopper

????[Tips] During operation, the nozzle must be aligned with the blue valve on the bag and pressed down firmly so that there is no gap between the nozzle and the valve, and then the air can be sucked out of the bag..
????[Easy to Operate & Rechargeable and Reusable] Our portable mini electric vacuum sealing machine is a one-touch switch button, which is convenient and quick to use. Point the nozzle of the portable vacuum sealing machine at the suction valve of the bag and compress it to suck out the air. It only takes 10 seconds to vacuum, which is more powerful than manual pumps..
????[Keep Food Fresh and Longer] The zipper vacuum sealed bag of the food vacuum kit can form an airtight barrier, prevent leakage, block moisture and oxygen to prolong the freshness and lock the flavor and nutrients, so that the food freshness can be increased to 5 Times longer. Slow down food spoilage and keep food delicious. No waste of food, save space. There are no more damp, tough, withered fruits and vegetables..
????[Multi-Purpose] The Vacuum Food Sealer can not only keep solid and semi-solid foods fresh for longer, but also can be used to vacuum the red wine, so that the red wine can be stored longer and more delicious. Whether dry goods, grains, vegetables, fru....

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