{"product_id":"geoprobe-dt21-dt22-direct-push-liners-1-375","title":"Direct Push Liner for Geoprobe® DT21 \/ DT22 Samplers, 1.375\"","description":"\u003cp\u003e\u003cstrong\u003eFits Geoprobe® DT21 and DT22 dual-tube samplers — 1.375\" OD.\u003c\/strong\u003e Dual-tube tooling keeps a cased hole open as you advance, which is what makes it the choice below the water table and in caving soils. If you're running DT21 or DT22, this is your liner.\u003c\/p\u003e\u003cp\u003eAn aftermarket replacement liner manufactured by Universal Plastics, a Geotech Environmental Equipment, Inc. company, from rigid clear PVC extruded in the USA. The liner captures a continuous, minimally disturbed core as the sampler is driven and retrieved — stratification is readable through the liner wall on the spot, and the sample reaches the lab intact.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRolled Edge or Core Catcher — which do I need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is the most common question on direct push liners, and the answer comes down to one thing: \u003cem\u003ewill your soil stay in the liner on the way up?\u003c\/em\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRolled Edge\u003c\/strong\u003e — an open liner with a rolled, reinforced lip at the end. Nothing obstructs the bore, so you recover the full core diameter, the sample slides out clean, and the stiffened lip resists splitting as the tool is driven. This is the right default for \u003cstrong\u003ecohesive soils\u003c\/strong\u003e — clays, silts, and damp sands that hold together as a plug and come up on their own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Catcher\u003c\/strong\u003e — adds a flexible basket at the bottom of the liner. Its fingers spread open as soil pushes in, then close beneath the core once driving stops, holding the sample in place during retrieval. Use it in \u003cstrong\u003enon-cohesive ground\u003c\/strong\u003e — running sands, gravels, and saturated or loose material below the water table, where an open liner lets the bottom of your core slide back out into the hole. If you're pulling short recovery or losing the bottom of the run, this is the fix.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Catcher, Not Drilled\u003c\/strong\u003e — the same retention basket, supplied without the factory set holes, for crews who drill their own hole pattern or don't use them. Offered in 4 ft.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eRule of thumb:\u003c\/em\u003e cohesive soil above the water table, Rolled Edge is faster and cheaper. Sandy, gravelly, or saturated soil, the Core Catcher pays for itself the first time it saves you a re-drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Geoprobe DT21 \/ DT22 dual-tube samplers, 1.375\" OD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e 3 ft, 4 ft, 5 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyles:\u003c\/strong\u003e Rolled Edge, Core Catcher, Core Catcher (Not Drilled, 4 ft)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet holes:\u003c\/strong\u003e 0.2\" and 0.39\" diameter (drilled styles)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rigid clear PVC, extruded in the USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Sold by the case — 50 liners per case\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e continuous or depth-discrete soil sampling in unconsolidated or coarse-grained soils, including work below the water table where a cased hole is needed. Clear PVC suits metals, inorganics, general chemistry, and stratigraphic logging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIn the field:\u003c\/strong\u003e load the liner into the DT22 sampler before driving, advance to depth, then retrieve and cap both ends for transport — or split the liner open on site to log and sub-sample.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.geotechenv.com\/pdf\/soil_sampling_equipment\/soil_sampling_sleeves.pdf\" target=\"_blank\"\u003eDirect Push Soil Liners — specifications (PDF)\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThese liners are aftermarket replacement parts manufactured by Universal Plastics, a Geotech Environmental Equipment, Inc. company. Universal Plastics and Geotech Environmental Equipment, Inc. are independent manufacturers and are not affiliated with, sponsored by, or endorsed by Geoprobe Systems, Inc. Geoprobe® and the sampler model designations referenced here are trademarks of their respective owner, used only to identify sampler compatibility.\u003c\/em\u003e\u003c\/p\u003e","brand":"Universal Plastics","offers":[{"title":"3 ft — Rolled Edge","offer_id":48759639048382,"sku":"71452052","price":121.5,"currency_code":"USD","in_stock":true},{"title":"3 ft — Core Catcher","offer_id":48759639081150,"sku":"71452050","price":108.0,"currency_code":"USD","in_stock":true},{"title":"4 ft — Rolled Edge","offer_id":48759639113918,"sku":"71452041","price":124.0,"currency_code":"USD","in_stock":true},{"title":"4 ft — Core Catcher","offer_id":48759639146686,"sku":"71452033","price":128.0,"currency_code":"USD","in_stock":true},{"title":"4 ft — Core Catcher, Not Drilled","offer_id":48759639179454,"sku":"71452062","price":128.0,"currency_code":"USD","in_stock":true},{"title":"5 ft — Rolled Edge","offer_id":48759639212222,"sku":"71452039","price":146.4,"currency_code":"USD","in_stock":true},{"title":"5 ft — Core Catcher","offer_id":48759639244990,"sku":"71452034","price":149.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/6102b2700d07922faf432fa845c35671_4193be39-635f-463e-882b-d40e03b3bc6d.jpg?v=1786994657","url":"https:\/\/envirotechonline.com\/products\/geoprobe-dt21-dt22-direct-push-liners-1-375","provider":"EnviroTech Services","version":"1.0","type":"link"}