{"title":"Pumps","description":"\u003cp\u003eERE carries personal, area and bioaerosol sampling pumps, sorted here by flow. Low-flow pumps for sorbent tubes include the Gilian \u003ca href=\"\/en-us\/products\/gilian%C2%AE-lfs-113-compact-pocket-sized-personal-low-flow-air-sampling-pump\"\u003eLFS-113\u003c\/a\u003e (1 to 350 cc\/min) and \u003ca href=\"\/en-us\/products\/gilian-800i\"\u003e800i\u003c\/a\u003e (200 to 800 cc\/min, built for back pressure on VOC methods). General personal pumps include the \u003ca href=\"\/en-us\/products\/gilian%C2%AE-gilair-3-personal-air-sampling-pumps\"\u003eGilAir-3 and GilAir-5\u003c\/a\u003e, the \u003ca href=\"\/en-us\/products\/gilian%C2%AE-gilair%C2%AE-plus-personal-air-sampling-pump\"\u003eGilAir Plus\u003c\/a\u003e, the \u003ca href=\"\/en-us\/products\/gilian-5000\"\u003eGilian 5000\u003c\/a\u003e, the Buck \u003ca href=\"\/en-us\/products\/buck-elite%E2%84%A2-personal-air-sampling-pump\"\u003eElite\u003c\/a\u003e and \u003ca href=\"\/en-us\/products\/buck-libra-plus%E2%84%A2-series-personal-air-sampling-pump\"\u003eLibra Plus\u003c\/a\u003e and the Zefon \u003ca href=\"\/en-us\/products\/zefon%C2%AE-escort-elf%C2%AE-personal-air-sampling-pump\"\u003eEscort ELF\u003c\/a\u003e; the \u003ca href=\"\/en-us\/products\/buck-allin%E2%84%A2-buck-allin%E2%84%A2-plus-intrinsically-safe-personal-low-flow-air-sampling-pump\"\u003eBuck Allin\u003c\/a\u003e is intrinsically safe. Higher flows come from the \u003ca href=\"\/en-us\/products\/gilian-10i\"\u003eGilian 10i\u003c\/a\u003e and \u003ca href=\"\/en-us\/products\/gilian-12\"\u003eGilian 12\u003c\/a\u003e (to 12 L\/min), the \u003ca href=\"\/en-us\/products\/gilian%C2%AE-aircon-2-portable-high-volume-constant-flow-area-air-sampling-pump\"\u003eAirCon-2\u003c\/a\u003e area sampler (2 to 30 L\/min) and Zefon high-volume pumps, and the Buck \u003ca href=\"\/en-us\/products\/buck-bio-culture%E2%84%A2-biocontaminent-sampling-pump\"\u003eBio-Culture\u003c\/a\u003e runs 30 to 120 L\/min for bioaerosols.\u003c\/p\u003e\u003cp\u003eERE rents and sells air sampling pumps and \u003ca href=\"\/en-us\/pages\/repair\"\u003eservices and calibrates\u003c\/a\u003e them. Tell us the method and media, and we will match a pump.\u003c\/p\u003e\u003ch2\u003eAir sampling pump FAQ\u003c\/h2\u003e\u003ch3\u003eWhich flow range do I need?\u003c\/h3\u003e\u003cp\u003eThe method sets it. Sorbent tubes for VOCs and gases run at low flows, from a few cc\/min to about 1 L\/min; filter cassettes for dust, metals and asbestos run at 1 to 5 L\/min; spore traps run at 5 to 15 L\/min; and area or clearance sampling uses high-volume pumps up to 30 L\/min. Pick a pump whose range covers your method's flow with margin. See our \u003ca href=\"\/en-us\/blogs\/field-notes\/air-sampling-pumps-buyers-guide-for-environmental-occupational-hygiene-professionals-in-canada\"\u003eair sampling pump guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eDo I need an intrinsically safe pump?\u003c\/h3\u003e\u003cp\u003eYes, where flammable gases or vapours may be present. The Buck Allin and Allin Plus are personal samplers certified for those locations; the Gilian BDX-II, for example, is not intrinsically safe and is built for asbestos and lead abatement work.\u003c\/p\u003e\u003ch3\u003eHow accurate must the flow be?\u003c\/h3\u003e\u003cp\u003eNIOSH methods call for flow within ±5% before and after each sample. Constant-flow pumps such as the Gilian 5000, 10i and 800i hold ±5%, and the Zefon Escort ELF adds an internal flow sensor. Check the flow with a \u003ca href=\"\/en-us\/collections\/calibrators\"\u003ecalibrator\u003c\/a\u003e before and after every sample, with the full sampling train in line.\u003c\/p\u003e\u003ch3\u003eRent or buy?\u003c\/h3\u003e\u003cp\u003eRent for a single project or a peak in workload, buy for a steady program. Rental pumps are calibrated and tested before they ship. Our \u003ca href=\"\/en-us\/blogs\/field-notes\/air-sampling-pump-rental-in-canada-what-to-rent-when-to-buy\"\u003erental guide\u003c\/a\u003e compares the costs.\u003c\/p\u003e","products":[{"product_id":"gilian-10i","title":"GILIAN 10i","description":"\u003cdiv class=\"shortDesc\" data-mce-fragment=\"1\"\u003eHigh Flow Personal Air Sampling Pump\u003c\/div\u003e","brand":"Sensidyne","offers":[{"title":"Default Title","offer_id":39873672872129,"sku":"Gilian 10i","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/gilian-10i-pump-front.png?v=1628775103"},{"product_id":"gilian-12","title":"GILIAN 12","description":"\u003cdiv class=\"shortDesc\"\u003eHigh Flow Personal Air Sampling Pump\u003c\/div\u003e","brand":"Sensidyne","offers":[{"title":"Default Title","offer_id":39873796538561,"sku":"GIL-910-1601-EU","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/gilian-12-pump-front.jpg?v=1628774991"},{"product_id":"gilian-5000","title":"Sensidyne Gilian 5000 Personal Air Sampling Pump","description":"\u003cdiv class=\"shortDesc\" data-mce-fragment=\"1\"\u003eProgrammable 5 Liter Live Flow Air Sampling Pump\u003c\/div\u003e","brand":"Sensidyne","offers":[{"title":"Default Title","offer_id":39873806565569,"sku":"GIL-810-0801-01","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/gilian_5000_1.jpg?v=1628774837"},{"product_id":"gilian-800i","title":"GILIAN 800i","description":"\u003cdiv class=\"shortDesc\" data-mce-fragment=\"1\"\u003ePowerful Low Flow Personal Air Sampling Pump\u003c\/div\u003e","brand":"Sensidyne","offers":[{"title":"Default Title","offer_id":39873835401409,"sku":"GIL-810-1301-01","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/gilian_800i_front.png?v=1628774509"},{"product_id":"escort®-elf-sampling-pump","title":"Escort® ELF Sampling Pump","description":"","brand":"Zefon International Inc.","offers":[{"title":"Default Title","offer_id":39873861419201,"sku":"Escort® ELF Sampling Pump","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/20100305-cd07-49cf-913b-b645b877d1f0.jpg?v=1620399187"},{"product_id":"gilian®-bdx-ii-abatement-personal-air-sampling-pump","title":"Gilian® BDX-II Abatement Personal Air Sampling Pump","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sensidyne","offers":[{"title":"Starter Kit","offer_id":40326161924289,"sku":"GIL-801863-171-1201","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"5-Pump Kit With 5 Single Unit Chargers","offer_id":40326161957057,"sku":"GIL-801863-171-KIT","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"5-Pump Kit With Gilian® 5-Station Charger","offer_id":40326161989825,"sku":"GIL-801863-171-KIT5","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"5-Pump Kit With Zefon® 5-Station Charger","offer_id":40326162022593,"sku":"GIL-801863-171Z-KIT5","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"Carrying Case","offer_id":43874860892386,"sku":"GIL-800511","price":846.4,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/files\/400329.jpg?v=1781128434"},{"product_id":"gilian®-lfs-113-compact-pocket-sized-personal-low-flow-air-sampling-pump","title":"Gilian® LFS-113 Compact, Pocket-Sized, Personal Low Flow Air Sampling Pump","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sensidyne","offers":[{"title":"D Starter Kit","offer_id":40337486020801,"sku":"GIL-910-0301-01","price":1819.2,"currency_code":"CAD","in_stock":true},{"title":"D 5-Pump Kit","offer_id":40337486053569,"sku":"GIL-910-0302-01","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"Carrying Case","offer_id":43874890285282,"sku":"GIL-800400","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/files\/LFS-113_Starter-Kit.jpg?v=1781128444"},{"product_id":"gilian®-gilair-3-personal-air-sampling-pumps","title":"Gilian® GilAir-3 \u0026 Gilian® GilAir-5 Personal Air Sampling Pumps","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sensidyne","offers":[{"title":"GilAir-3 R Starter Kit","offer_id":40337795875009,"sku":"GIL-800485-171-1201","price":1553.6,"currency_code":"CAD","in_stock":true},{"title":"GilAir-3 R 5-Pump Kit With 5-Unit Charger","offer_id":40337795907777,"sku":"GIL-800485-171-1205","price":7857.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-3 RC Starter Kit","offer_id":40337795940545,"sku":"GIL-800508-171-1201","price":1892.8,"currency_code":"CAD","in_stock":true},{"title":"GilAir-3 RC 5-Pump Kit With 5-Unit Charger","offer_id":40337795973313,"sku":"GIL-800508-171-1205","price":9349.5,"currency_code":"CAD","in_stock":true},{"title":"GilAir-3 RP Starter Kit","offer_id":40337796006081,"sku":"GIL-800510-171-1201","price":1899.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-3 RP 5-Pump Kit With 5-Unit Charger","offer_id":40337796038849,"sku":"GIL- 800510-171-1205","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 R Starter Kit","offer_id":43874937274594,"sku":"GIL-800883-171-1201","price":1716.8,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 R 5-Pump Kit With 5-Unit Charger","offer_id":43874937307362,"sku":"GIL-800883-171-1205","price":8544.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 RC Starter Kit","offer_id":43874937340130,"sku":"GIL-800885-171-1201","price":1906.5,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 RC 5-Pump Kit With 5-Unit Charger","offer_id":43874937372898,"sku":"GIL- 800885-171-1205","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 RP Starter Kit","offer_id":43874937405666,"sku":"GIL-800884-171-1201","price":1989.0,"currency_code":"CAD","in_stock":true},{"title":"GilAir-5 RP 5-Pump Kit With 5-Unit Charger","offer_id":43874937438434,"sku":"GIL-800884-171-1205","price":10467.0,"currency_code":"CAD","in_stock":true},{"title":"Carrying Case","offer_id":43874937471202,"sku":"GIL-800511","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/products\/GilAir-3.png?v=1626460189"},{"product_id":"gilian®-power-series-personal-air-sampling-pumps","title":"Gilian® Power Series Personal Air Sampling Pumps","description":"High Efficiency Air Sampling Pumps","brand":"Sensidyne","offers":[{"title":"Gilian® 800i Starter Kit","offer_id":40533885681857,"sku":"GIL-910-1301-US","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 800i 5-Pump Kit","offer_id":40533885714625,"sku":"GIL-910-1305-US","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 5000 Starter Kit","offer_id":40533885747393,"sku":"GIL-910-0802-01","price":2103.0,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 5000 5-Pump Kit","offer_id":40533885780161,"sku":"GIL-910-0801-01","price":11260.5,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 10i Starter Kit","offer_id":40533885812929,"sku":"GIL-910-1501-US","price":2767.5,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 10i 5-Pump Kit","offer_id":40533885845697,"sku":"GIL-910-1505-US","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 12 Starter Kit","offer_id":40533885878465,"sku":"GIL-910-1601-US","price":3063.0,"currency_code":"CAD","in_stock":true},{"title":"Gilian® 12 5-Pump Kit","offer_id":40533885911233,"sku":"GIL-910-1605-US","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/7434\/6433\/files\/2_6587d257-0dbf-4c35-b687-e9d9525c84c4.png?v=1781532911"},{"product_id":"gilian®-aircon-2-portable-high-volume-constant-flow-area-air-sampling-pump","title":"Gilian® AirCon-2 Portable High Volume Constant Flow Area Air Sampling Pump","description":"\u003cp\u003eThe \u003cstrong\u003eGilian AirCon-2\u003c\/strong\u003e (from Sensidyne) is a programmable, constant-flow \u003cstrong\u003earea air sampling pump\u003c\/strong\u003e that draws \u003cstrong\u003e2-30 LPM\u003c\/strong\u003e through a filter cassette or sorbent tube for area, industrial-hygiene, and environmental sampling. It is built for stationary, long-duration runs at a fixed location, not for clipping to a worker's belt. ERE Inc. is an \u003cstrong\u003eauthorized Canadian and US distributor\u003c\/strong\u003e that will sell you the AirCon-2, rent it to you, or calibrate and repair the one you already own — in-house, with NIST-traceable flow calibration.\u003c\/p\u003e\n\n\u003ch2\u003eWhat the AirCon-2 is and how it fits the sample train\u003c\/h2\u003e\n\u003cp\u003eThe AirCon-2 is the \u003cstrong\u003epump\u003c\/strong\u003e in an area sampling train. It pulls a known, constant volume of air at a set flow rate through your chosen collection media so that air contaminant can be captured and sent for lab analysis. A typical area sample train runs:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump (AirCon-2)\u003c\/strong\u003e — sets and holds the flow rate (2-30 LPM)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollection media\u003c\/strong\u003e — a filter cassette (for particulate) or a sorbent tube (for vapours)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTubing\u003c\/strong\u003e — connects the media to the pump inlet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSampling mast\u003c\/strong\u003e — positions the inlet at breathing-zone height in the area being monitored\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause flow is held constant and the pump is fully programmable, the AirCon-2 is suited to unattended, repeatable area sampling where a personal pump's short battery life and small flow range would fall short.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArea and perimeter sampling\u003c\/strong\u003e inside a plant or facility — fixed-location monitoring of a work area rather than one person\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial-hygiene area monitoring\u003c\/strong\u003e — characterizing airborne exposure across a space\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental and ambient particulate\u003c\/strong\u003e sampling at a fixed point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbatement and remediation perimeter\u003c\/strong\u003e monitoring during asbestos, mold, or lead work\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnattended long-duration sampling\u003c\/strong\u003e — up to 99 hours via programmed timing routines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTypical contaminant targets include \u003cstrong\u003edust and total particulate, asbestos fibres, mold spores, respirable silica, and metals\u003c\/strong\u003e — driven by the cassette or sorbent media you pair with the pump and the analytical method you follow.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eAirCon-2\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFlow range\u003c\/td\u003e\n\u003ctd\u003e2-30 LPM, constant-flow control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProgramming\u003c\/td\u003e\n\u003ctd\u003eUp to three custom timing routines (starts, stops, delays, holds, cycles)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUnattended run time\u003c\/td\u003e\n\u003ctd\u003eUp to 99 hours via programmed routines\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eTouchpad with LCD display\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFault handling\u003c\/td\u003e\n\u003ctd\u003eInstant Fault function — stops the run, locks the elapsed time, and displays \"FAULT\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBack-pressure check\u003c\/td\u003e\n\u003ctd\u003eInstant Pressure Check on the LCD via a single button\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower source\u003c\/td\u003e\n\u003ctd\u003eOperates off AC or battery power\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eSampling mast, support tip, hose, and manual\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower (required, sold separately)\u003c\/td\u003e\n\u003ctd\u003ePower Module GIL-801000-2 and\/or Battery GIL-801001 (4-hour Lead-Acid Gel pack; stack two for 8-hour operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFull specifications and the operating manual are available on the \u003cstrong\u003eGilian AirCon-2 datasheet\u003c\/strong\u003e linked on this page.\u003c\/p\u003e\n\n\u003ch2\u003eComplete your setup\u003c\/h2\u003e\n\u003cp\u003eThe AirCon-2 ships with a sampling mast, support tip, hose, and manual. To run it, you also need a power source, and to take a sample you need collection media:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Module GIL-801000-2\u003c\/strong\u003e and\/or \u003cstrong\u003eBattery GIL-801001\u003c\/strong\u003e — required for operation, sold separately\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilter cassettes\u003c\/strong\u003e for particulate, asbestos, and metals sampling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSorbent tubes\u003c\/strong\u003e for vapour and VOC sampling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTubing\u003c\/strong\u003e to connect the media to the pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure which media matches your contaminant and method? ERE can match the right cassette or sorbent tube to your ASTM or NIOSH method — the application guidance pure e-tailers don't provide. \u003ca href=\"\/en-us\/pages\/request-a-quote\"\u003eRequest a quote\u003c\/a\u003e with your contaminant and we'll spec the full kit.\u003c\/p\u003e\n\n\u003ch2\u003ePersonal vs area: which Gilian pump do you need?\u003c\/h2\u003e\n\u003cp\u003eThe AirCon-2 is an \u003cstrong\u003earea\u003c\/strong\u003e pump — fixed location, high flow, long unattended runs. If you need to measure one worker's exposure, a \u003cstrong\u003epersonal\u003c\/strong\u003e pump that clips to the belt is the right tool. ERE stocks the full Gilian \/ Sensidyne range:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAirCon-2\u003c\/strong\u003e — area \/ perimeter, 2-30 LPM, up to 99 hr unattended (this page)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilian BDX-II\u003c\/strong\u003e — heavy-duty personal pump for abatement and remediation work\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilian GilAir-3 \/ GilAir-5\u003c\/strong\u003e — personal belt-worn pumps for breathing-zone sampling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilian GilAir Plus\u003c\/strong\u003e — programmable personal pump with low- and high-flow ranges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilian 5000\u003c\/strong\u003e — personal pump for higher-flow personal sampling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGilibrator-2\u003c\/strong\u003e — primary-standard flow calibrator for verifying any of these pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRent it, buy it, or send yours in for calibration\u003c\/h2\u003e\n\u003cp\u003eAir sampling pumps drift out of spec, and an out-of-spec pump means an invalid sample. Good practice is to verify flow against a primary standard \u003cstrong\u003ebefore and after every use\u003c\/strong\u003e. That's why ERE doesn't just sell a pump and walk away:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuy\u003c\/strong\u003e the AirCon-2 outright\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRent\u003c\/strong\u003e it for a single project or campaign instead of buying\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibrate and repair\u003c\/strong\u003e your Gilian or Sensidyne pump in-house, with NIST-traceable flow calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlenty of sellers will ship you this pump. 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