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Best Choice P PBAUTOS 
P PBAUTOS 3 Gallon Vacuum Chamber Stainless Steel, 12L Tempered Glass Lid Pressure Degassing Chamber, Pressure Pot for R Durable Material: Our vacuum chamber is made of high strength stainless steel, tempered glass lid is durable and sturdy,VEVOR 
VEVOR Chamber Vacuum Sealer, 260W Sealing Power, Vacuum Packing Machine for Wet Foods, Meats, Marinades and More, Compac Premium Vacuum Effect: With a powerful motor boasting a max 950W power and a max relative vacuum of -100KPa, our chamberBACOENG 
BACOENG 12 L Stainless Steel Vacuum Chamber for Degassing Urethanes, Resins, Silicones and Epoxies 25cm(H) x 25cm(OD) Designed especially for the tempered glass lid that is not only high-strength, impact resistant but also gives a betterP PBAUTOS 
P PBAUTOS 5 Gallon Vacuum Chamber, 19L Tempered Glass Lid Stainless Steel Degassing Chamber Perfect for Stabilizing Wood Durable Material: It is made of high strength stainless steel, tempered glass lid is durable and sturdy, which is speciaBest Value Wevac 
Wevac 12 inch Chamber Vacuum Sealer, CV12, liquid or juicy food including Fresh Meats, Soups, Sauces and Marinades. Comp POWERFUL BUT COMPACT DESIGN: chamber size is 12.2"W x 13"L x 3.9"H, perfect for portions and cuts of juicy meat, soup orWevac 
Wevac Chamber Vacuum Sealer, CV10, ideal for liquid or juicy food including Fresh Meats, Soups, Sauces and Marinades. Co POWERFUL BUT COMPACT DESIGN: chamber size is 254x290mm, perfect for portions and cuts of juicy meat, soup or sauce. Oute"Abbraccia" 
Stainless Steel Degassing Chamber Vacuum Degassing Chamber Pressure Pot Pressure Degassing Chamber for Plaster Degassing 【Durable Material】: The Vacuum Chamber is made of high strength stainless steel, upgraded lid, which is durable and sturharayaa harayaa Vacuum Chamber Stainless Steel Chamber Degassing Resin Silicone Epoxies Plaster Gas Extraction Vacuum Degassing 【Good Sealing】: The vacuum defoaming barrel is equipped with a thickening and widening sealing ring, stronger sealing anAUSWAY AUSWAY 3CFM Vacuum Pump for Refrigerant Air Conditioning AC Conditioner HVAC Refrigeration Food Clothes Packaging Car Ma 【High Efficiency】: Lightweight cast aluminium construction for maximum durability; direct-driven motor to make it easy tTENOL Vacuum Chamber Stainless Steel Chamber Defoaming Barrel Vacuum Degassing Chamber Silicone Gasket for Degassing Urethanes 【Transparent Glass Window:】: This stainless steel degassing chamber comes with window, provide a good visibility for worGeneric 304 Stainless Steel Chamber Vacuum, Chamber Defoaming Barrel Vacuum Degassing Chamber for Silicones, Epoxies Degassing, 【Durable Material】: The Vacuum Chamber is made of high strength stainless steel, upgraded lid, which is durable and sturAmagogo Amagogo Vacuum Chamber Vacuum Defoaming Barrel, Degassing Silicones Epoxies Essential Oils, Vacuum Degassing Chamber, 1 【Transparent Lid】: This vacuum degassing chamber comes with a visible clear lid, 12mm thick tempered glass material, proVEVOR VEVOR DZ-260A Chamber Sealing Machine Auto Vacuum Packaging Machine Commercial Premium Sealing Effect: Motor Power: 180W. Max. Sealing Size:33 x 25 cm / 13 x 9.8 in. Vacuum Pump Rate:6.5cbm/h. ChambeGugxiom Vacuum Bell Jar, Vaccum Demonstration Kit, Vacuuming Demonstration Hood Teaching Tools, Sound Physics Demonstration, wit VACUUM SOUND TANK: Place an electric bell in the tank and a clear ringing sound can be heard, then pump out the air andXgdsnly Xgdsnly Vacuum Chamber, Stainless Steel Chamber, Pressure Pot, Vacuum Degassing Chamber, Silicone Seal for Degassing Res 【Feature】: The Vacuum Degassing Chamber is equipped with sound reduction equipment to decrease the gas degassing noise.ISTOYO ISTOYO Resin Bubble Remover, Remove 99% Bubble in 7 Minutes, 96kPa Vacuum Epoxy Resin Airless Machine for Epoxy Resin, U BUBBLE REMOVAL: ISTOYO's highly effective bubble remover helps create a smooth, flawless resin surface. The vacuum chambISTOYO ISTOYO Resin Bubble Remover, Remove 99% Bubble in 8 Minutes, 95kPa Vacuum Epoxy Resin Airless Machine for Epoxy Resin, U BUBBLE REMOVAL: ISTOYO's highly effective bubble remover helps create a smooth, flawless resin surface. The vacuum chambVTUUU VTUUU Chamber Vacuum Sealer Bags 300 Count 6" x 10" 8" x 12" 10" x 13" For 3-Mil Vacuum Chamber Bags Pre-Cut Chamber Vac PAY SPECIAL ATTENTION:VTUUU 3-Mil Pre-Cut Chamber Vacuum Sealer Bags Not Dor Use With External Vacuum SealerGeneric Generic Vacuum Chamber for Extracting Gases from Silicones and Epoxies, 2 Gallon 【Transparent Lid】: This vacuum degassing chamber comes with a visible clear lid, 12mm thick tempered glass material, proGUSUCIN GUSUCIN Resin Bubble Remover, Mini Vacuum Chamber & Pump Kit for Quick 99% Bubble Removal in 7 Minutes, Epoxy Resin Cast Effortlessly Eliminate Bubbles: Tired of dealing with bubbles in your resin creations? Look no further than the GUSUCIN15% Off SYAMEET SYAMEET Resin Bubble Remover,95 KPa High Vacuum,3-20 Minutes Adjustable,Digital Display Big Capacit Epoxy Resin Airless 【High-Quality Materials】The chamber is made of premium PC material with a highly transparent design, allowing you to clekokiya Vacuum Chamber, Stainless Steel Degassing Chamber with Glass Lid, Silicone Gasket Silicone Gasket for Resin Casting Dega 【Durable Material】: The Vacuum Chamber is made of high strength stainless steel, upgraded lid, which is durable and sturVEVOR VEVOR 260W Chamber Vacuum Packing Machine Compact Size 260mm Vacuum Packing Machine in Home Kitchen and Commercial Use f PREMIUM VACUUM EFFECT - With a powerful motor offering a maximum power of 950W and a maximum relative vacuum of -100KPa,Amagogo Amagogo Vacuum Chamber, 304 Stainless Steel Chamber with Pump Hose, Vacuum Degassing Chamber for Essential Oils, Epoxies 【Wide Application】: The vacuum chamber with comfortable handle, convenient to carry, is suitable for degassing siliconesGeneric Generic Pressure Pot Vacuum Chamber for Resin Casting with Silicone Seal, 1.5 Gallon 5.6L 【Durable Material】: The Vacuum Chamber is made of high strength stainless steel, upgraded lid, which is durable and sturMotiveTech MotiveTech Stainless Steel Defoaming Barrel Vacuum Chamber Designed for Gas Extraction from Plaster, 3 Gallon 12L 【Durable Material】: The Vacuum Chamber is made of high strength stainless steel, upgraded lid, which is durable and sturAvid Armor Avid Armor Chamber Machine Pouches, Pre-Cut Chamber Vacuum Sealer Bags, Heavy Duty Seal Pouch, BPA-Free Chamber Sealer, NOT FOR USE WITH FOOD SAVER HOUSEHOLD VACUUM SEALERS - for use with chamber vacuum sealer machines and heat bag sealersAvid Armor Avid Armor – Chamber Machine Pouches, Pre-Cut Chamber Vacuum Sealer Bags, Heavy Duty Seal Pouch, BPA-Free Chamber Sealer Preserves Food Quality - Keep your food fresh and delicious with our vacuum chamber pouches! These seal bags block moist16% Off Mfancy Mfancy Resin Bubble Remover,Efficient Remove Bubbles,95 KPa High Vacuum,Large Capacity Epoxy Resin Airless Machine for E 【Quickly remove bubbles】Using advanced 95KPa high vacuum technology, 99% of bubbles can be removed in 5-10 minutes, effeVTUUU VTUUU Chamber Vacuum Sealer Bags 260 Quart size 8" x 12", Pint Size 6" x 10" For Vacuum Chamber Bags Pre-Cut Chamber Vac PAY SPECIAL ATTENTION:Vtuuu Pre-Cut Chamber Vacuum Sealer Bags Not Dor Use With External Vacuum SealersEigell Eigell Vacuum Chamber Stainless Steel Chamber Pressure Pot Vacuum Degassing Chamber Silicone Gasket for Degassing Resin 【High Precision】: Accurate silicone oil filling gauge, , the dial has a pressure scale, protected by silicone oil, and t17% Off Avid Armor Avid Armor – Mylar Chamber Machine Pouches 6x8" Pre-Cut 3-Sides Sealed Vacuum Pouch, Heavy Duty Food Safe for Long Term Preserves Food Quality - Keep your food fresh and delicious with our Mylar vacuum chamber pouches! These seal bags blockFYAUOCNP Stainless Steel Vacuum Chamber Without Pump,Extra Large Vacuum Degassing Chamber with Clear Acrylic Lid,for Epoxy Resin Wide Applications :This vacuum chamber is suitable for degassing urethane, silicones, resin casting, epoxies, extractingHomiloggo Vacuum Sealer Machine, 85kPa 120W Automatic Food Vacuum Sealer, Powerful Sealing System, Build-in Cutter, Bags Storage, 【Automatic Function Easy Operation】 DRY VAC & SEAL - For dry food, press to vacuum and seal. MOIST VAC&SEAL - For moistAkitas Akitas New 2400W Cylinder Vacuum Cleaner Bagless Cyclonic HEPA Filter (155) Powerful 2400W motor , >320W suction power, >24Kpa VacuumBLuvLY Chamber Vacuum Sealer Machine, 570w Commercial Kitchen Food Chamber Vacuum Sealer, Do Not Pick The Bag, Packaging Machin HIGH QUALITY MATERIAL： Made of stainless steel, it has good resistance to corrosion, durable, fastness and easy to cleanResiners Resiners Resin Bubble Remover,Quickly Remove 99% Bubble Within 9 Min,-95kPa Vacuum Degassing Chamber,Airless Machine for REMOVE 99% BUBBLES: Are you tired of bubbles ruining your resin creations? Resiners' proprietary UltraVacu technology ca15% Off Frafuo Frafuo Vacuum Sealer Machine Automatic PowerVac Air Sealing Machine for Food Preservation Dry & Moist Sealing Modes Led 【Keep Fresh Longer】: Food vacuum sealer with powerful suction, 65(KPA),3000(R) removes air from textured bags. And high-JTSF Vacuum Chamber 1.5/2 /3/5 Gallon Stainless Steel Vacuum Degassing Chamber Acrylic Lid Heat Treated Silicone Lid Gasket ( Material: 304 stainless steelPouchWorth 500 pcs Clear 10" x 13", 3 mil Vacuum Chamber Sealer Pre-Cut Bags BPA Free Great for Food Preservation, Freezer Storage NOT COMPATIBLE WITH FOODSAVER STYLE SUCTION MACHINES: Will only work with Vacuum Chamber Machines. Our pouches can be frBeyond Trails BeyondTrails 3 Pack Vacuum Compression Packing Cubes for Clothes | Travel Bag | Vacuum Storage Bags | Suitcase Travel Ac 𝗠𝗮𝘅𝗶𝗺𝗶𝘇𝗲 𝗬𝗼𝘂𝗿 𝗟𝘂𝗴𝗴𝗮𝗴𝗲 𝗦𝗽𝗮𝗰𝗲: Discover how our BeyondTrails vacuum compression bags allow you toSanatron Inc Acrylic Vacuum Chambers - Applications, Technology, and Engineering: An Introduction to Rough, Low, and Medium Vacuum Re NexLevVac NexLevVac Chamber Vacuum Sealer Bags 200 PCS 8"x12",Pre-Cut Chamber Machine Pouches, Heavy Duty Seal Pouch, Food Storage Suitable for Chamber Vacuum Sealer:NexLevVac chamber vacuum sealer bags are designed for chamber vacuum sealer machinesEnigma Enigma 2800W Bagless Vacuum Cleaner 4.5L Canister Lightweight Cylinder Multi Cyclonic Filtration with Turbo Head for Car Strong 2800W Max Power, Geniune Multi Cyclonic FiltrationWevac [2024 New] 15x25cm 200 Count Precut Bags, Vacuum Sealer Bags for Food, Great for Food Storage, Sous Vide and Meal Prep, VERSATILE COMPATIBILITY: 200 count 15x25cm precut bags compatible with both chamber and external vacuum sealers, providiInkbird INKBIRD Food Vacuum Sealer Machine INK-VS03, Sealing Time Display, 80KPA Strong Suction, Built-in Bag Rolls, Automatic V [Built-in Cutter & Customised Bag Size]It is designed with a built-in 11.8/30cm bag cutter and a bag chamber for storingESUHUBING ESUHUBING Vacuum Chamber 5 Gallon Stainless Steel Vacuum Degassing Chamber Glass Lid Heat Treated Silicone Lid Gasket Dear customers: If you have any questions, you are welcome to contact us at any time, we are very happy to answer your qBe Amazing! Toys Be Amazing Toys, The Incredible Vacuum Chamber, Pump Out The Atmosphere and Be Amazed!, Ages 8+ Helps your kid explore the principles of physics and chemistryMISETA Vacuum Degassing Chamber, Vacuum Chamber 6L Gel Defoaming Vacuum Degassing Chamber Kit with Valve Vacuum Gauge High-quality Material: The vacuum box is made of high-quality stainless steel and silicone, which is wear-resistant, strweishan weishan Resin Bubble Remover, Faster Remove Bubbles Within 5 Mins, Wide Vacuum Degassing Chamber, Compact Epoxy Resin Ai Remove Bubbles Faster: Resin bubbles remover, a newly designed cylindrical container, can help you deeply remove 99% ofPro-Line Pro-Line Domestic Chamber Vacuum Sealer, 2.5 Liter Capacity Creates a strong and reliable vacuum seal to lock in freshness and extend the shelf life of foodInkbird INKBIRD Vacuum Sealer Automatic Sealing Machine for Food Preservation Dry Moist Sealing Modes with Built-in Cutter Start [5X Longer Food Freshness] INK-VS01 vacuum sealer machine keeps food fresh in the refrigerator longer, even up to five tCL CANLENPK CANLENPK 7x10cm/2.7x4inch Vacuum Sealer Bags,Precut Easy Tear Notch Textured Food Storage Sous Vide Bag,Seal Meal Snack 【For More Healthy Life Bags】CANLENPK vacuum sealer bags are made of commercial food grade materials,BPA-free Boilsafe,FrESUHUBING ESUHUBING 3-Gal Vacuum Chamber Stainless Steel 12L Stainless Steel Vacuum Degassing Chamber Silicone AB Vacuum Defoaming Dear customers: If you have any questions, you are welcome to contact us at any time, we are very happy to answer your qVEVOR VEVOR Chamber Vacuum Packing Machine, Power Vacuum Pump 380W, Compact Commercial Vacuum Packing Machine, 290mm Sealer fo 【Better Preservation】Our chamber vacuum sealer has a 380W vacuum pump, it sucks air at 70L/min, reaching a vacuum degreeAvid Armor Avid Armor USV32 Chamber Vacuum Sealer Dust Cover Easy to Use: Designed to slip on and off your vacuum sealer effortlessly, and can be folded up for convenient storage whDesert Publishing How to build and use a Vacuum Chamber: for food preservation, mold making, degassing liquids, and more! 39% Off FoodSaver FoodSaver VS0500 35 x 950ml Vacuum Zipper Bags, Clear Fresher for Longer: Keep fridge, pantry and on-the-go items fresh for up to twice as long* with these zipped food vacuumPouchWorth PouchWorth 500 pcs Clear 8" x 12" Quart, 3 mil Chamber Machine Pouches, Pre-Cut Chamber Vacuum Sealer Bags, Heavy Duty S NOT COMPATIBLE WITH FOODSAVER-STYLE SUCTION MACHINES: Please note that these vacuum seal pouches are designed exclusivelPolyScience PolyScience Culinary Chamber Vacuum Bags, 8 by 12-Inch, Clear, Case of 250 Bpa free materialAntstone Antstone Resin Bubble Remover 3L Capacity Upgraded 5-10 Min Quickly Remove Bubbles 95kPa Vacuum Degassing Chamber Compac Unparalleled Bubble-Busting Efficiency: Imagine pouring your carefully mixed resin into your mold, only to be greeted byPLAY PLAY Bug Catcher kit for Kids, Bug Vacuum for Kids with Suction and Magnifying Glass Viewing Chamber, Bug Catcher Vacuum Outdoor Science Toys: The Bug catcher for kids have small mouth dust hood,it is aimed at small and light insects (such aTenTen Labs TenTen Labs Wine Aerator and Pump (2-pack) - Aerating Spout and Vacuum Stopper - Gift Box Included Perfectly Aerate Your Wine: The re-engineered TenTen Labs wine aerator pourer infuses the OPTIMAL amount of oxygen intoPouchWorth PouchWorth 1,000 Pack Clear 10" x 12", 3 mil Chamber Machine Pouches, Pre-Cut Chamber Vacuum Sealer Bags, Heavy Duty Sea NOT COMPATIBLE WITH FOODSAVER-STYLE SUCTION MACHINES: Please note that these vacuum seal pouches are designed exclusivelSplitflask 2-in-1 Hot & Cold Vacuum Insulated 30oz Tumblers, Stainless Steel Dual Chamber, Leak-Proof, BPA-Free, Fits Cup Holder, T HOW TO PROPERLY SECURE THE SPLITFLASK LID: It is important to properly align the Splitflask lid in order to prevent mixiULTRASOURCE UltraSource - Chamber Machine Pouches 3 Mil Thickness, 6 x 10 inches fits 1 pint, Pack of 250 Vacuum Chamber Pouches, BP NOT COMPATIBLE WITH FOOD SAVER SEALERSPFBEGS Food Vacuum Sealer for Meal Prep,Food Packer Equipped with Vacuum Bags,Built-in Cutter,with Built-in UV Rays Starter Kit 【Built-In Cutter & Bag Chamber】: The vacuum sealer is easy to use with a built-in cutter for making our custom sized bagDevanti Devanti Stick Vacuum Cleaner, Corded Handheld Hand Held Handstick Strong Suction Bagless Ultra Light Red Compact Dustbus POWERFUL VACUUMING: The powerful 450W 40000rpm motorised head has a steady suction power of up to 15000Pa.Rommelsbacher ROMMELSBACHER Vacuum Sealer VAC 385, 12 Litres/Minute, One-Handed Operation, Roll Compartment, Sturdy Sealing Seam, Hose Housing made of high-quality, easy-care stainless steel, comfortable one-handed operation - effective and safe, suitable25% Off FoodSaver FoodSaver VS4500 Lock and Seal Vacuum Sealer, Black Product Type: KitchenVDM Verlag Theoretical and numerical studies of plume flows in vacuum chambers CREATESPACE Vacuum Kiln Drying for Woodworkers: How to Build and Use a Vacuum Kiln for Drying Wood BiblioGov Chamber B Thermal/Vacuum Chamber: User Test Planning Guide FoodSaver FoodSaver Space Saving Vacuum Sealer | Compact Saves 30% More Space, Powerful Suction, Heat & Handheld Vacuum Sealer, Ea COMPACT WITH FULL SIZED POWER: The compact design Saves 30% more space with the same power as full size vacuum sealer maNabu Press Report On Formaldehyd Disinfection in a Vacuum Chamber Devanti Devanti Handheld Vacuum Cleaner Cordless Strong Suction Hand Held Vacuums POWERFUL SUCTION: With 2200W of power, the vacuum cleaner has a considerable suction ability of up to 19kPa that makes lWevac [2024 New] Vacuum Sealer Bags for Food, 15x25cm 100 Count Precut Bags, Great for Food Storage, Sous Vide and Meal Prep, VERSATILE COMPATIBILITY: 100 count 15x25cm precut bags compatible with both chamber and external vacuum sealers, providiInkbird INKBIRD Vacuum Sealer Machine Food Storage with Seal Bags and Starter Kit INK-VS02, Dry Moist Pulse Canister 4 Sealing M [Built-In Cutter & Bag Chamber] INK-VS02 has a built-in cutter for us to make custom-sized bags and a roll bag chamber fInkbird INKBIRD INK-VS04 Home Food Vacuum Sealer Machine with Starter Kit, Dual Motor, Dual Pump, Multiple Functions, Countdown [Dual Motor, Dual Pump for Fast Vacuum] This home vacuum sealer is equipped with dual motor, dual pump technology that eBiblioScholar Vacuum Chamber Construction and Contamination Study of a Micro Pulsed Plasma Thruster BiblioScholar Vacuum Chamber Construction and Contamination Study of a Micro Pulsed Plasma Thruster ymonoe Handheld Vacuum Sealer for Food,Rechargeable Electric Vacuum Sealer with 15 Reusable Vacuum Bags,Portable Mini Vacuum Se Keeps Food Fresh Up to 5X Longer: Effectively removes air to extend the shelf life of your food, retaining flavor and nuInkbird INKBIRD Cordless Vacuum Sealer Machine INK-VS06 with Starter Kit -80kPa, Wireless Auto Food Sealer with Built-in Cutter, ✔[Wirelss & Rechargeable for Camping & Fishing] INKBIRD INK-VS06 cordless vacuum sealer adopts a rechargeable design, anBOXSAM BOXSAM Large Vacuum Travel Backpack with Pump for Women,Airback Personal Item Carry on Backpacks Flight Approved 18x14x8 📦Vacuum Compression - Vacuum compression maximizes packaging efficiency! Our systems are equipped with one-way suctionBOXSAM BOXSAM Large Vacuum Travel Backpack with Pump for Women,Airback Personal Item Carry on Backpacks Flight Approved 18x14x8 📦Vacuum Compression - Vacuum compression maximizes packaging efficiency! Our systems are equipped with one-way suctionMingzhe Mingzhe Cordless Vacuum Haircut Kit Hair Clipper Waterproof Built-in Rechargeable Battery with Storage Bag Cleaning Brus 【Powerful Vacuum Hair Clipper】Adopts dual motors -- one motor(3200-4200R/min) & one motor(8000-9000R/min or 10500-11500RJEUXDOS JEUXDOS Vacuum Backpack for Travel, 25 Inch Expandable Vacuum Compression Bag with Electric Vacuum Pump, Space Saver Bag Vacuum Compression: Our vacuum compression backpacks feature a one-way valve chamber, you can choose our electric vacuumHihitomorrow W70345 Cassette Chamber with Compression Ring Assembly Replacement Parts Kit Fit For Zodiac Baracuda G3 & G3 Pro Automat APPLICATION: The W70345 cassette chamber assembly part is compatible with Zodiac Baracuda G3 pool cleaner and G3 Pro autBibliogov Preparation of a Frozen Regolith Simulant Bed for Isru Component Testing in a Vacuum Chamber Wevac [2024 New] 8 Pack 15cm x 6m, 20cm x 6m and 28cm x 6m, Vacuum Sealer Bags Rolls for Food, Great for Food Storage, Sous Vi VERSATILE COMPATIBILITY: 2 Rolls 15cm x 6m, 3 Rolls20cm x 6m and 3 Rolls 28cm x 6m, 8 Rolls in total, compatible with boGeneric Pressure rise in vacuum chamber from release of liquid hydrogen / John W. Mark Robert D. Watt and William G. Richards. 1 CRC Press Basic Vacuum Technology, 2nd edition Used Book in Good ConditionElsevier Fundamentals of Vacuum Science and System Design for High and Ultrahigh Vacuum, Volume 3: Materials, Design, and Practic Behogan Wall Mounted Soap Dispenser, 3 Chambers, 300 ml Shower Gel Dispenser, No Drilling, Shampoo Dispenser for Shower, Shower High-quality materials: the soap dispenser wall mounting made of impact-resistant ABS plastic is easier to hang on the wCRC Press Vacuum Technique BOXSAM Large Vacuum Travel Backpack with Pump for Women,Airback Personal Item Carry on Backpacks Flight Approved 18x14x8 inches 📦Vacuum Compression - Vacuum compression maximizes packaging efficiency! Our systems are equipped with one-way suctionIndependently published Minds in the Vacuum: The Impact of Isolation on Space Traveller's Psychology Logos Verlag Berlin Inhomogeneous Chamber States in Screw Spindle Vacuum Pumps: 7 Wiley-VCH Vacuum in Particle Accelerators: Modelling, Design and Operation of Beam Vacuum Systems Wiley A Users Guide to Vacuum Technology