Technical Information


Tips and Tricks

The Speedbag (US Patent No. 9,726,013; No. 6,481,300; No. 6,837,120; others pending) is a new version of our standard HydraSleeve that minimizes drag down when placing the SpeedBag HydraSleeve in the well. 

900 mls SpeedBag specs:  37 inches long and 1.75" O.D. when full; made for 2" schedule 40 and larger wells;  they will hold approximately 900 mls of sample volume

500 mls SpeedBag specs:  30 inches long and 1.5" O.D. when full; made for 2" schedule 80 and larger wells; they will hold approximately 500 mls of sample volume

No waiting!  No equilibration time!  Immediate retrieval!  Purchase fewer weights for one job!

Save even more on your groundwater sampling programs!

The video seen below shows the effects of a (modified HydraSleeve) Speedbag on mixing in the water column when deployed in a 2-inch schedule 40 well. 


*YouTube link to the speedbag video:

The video illustrates the minimal mixing that occurs when a Speedbag is deployed and immediately recovered in a 2-inch schedule 40 well.  The results confirm that the Speedbag can be deployed and recovered in a 2-inch schedule 40 well to collect a formation quality sample from the well screeen without waiting for the well to re-stabilize.  Tests show that the SpeedBag will displace 1 inch of water when it is placed in the 2-inch, schedule 40 well (empty). 

Speedbags collect the same kind of sample as a standard HydraSleeve - they both collect a whole water sample suitable for almost any analysis.

The SpeedBag will require an additional step when retrieving from the well.  While the hole above the check valve allows water to flow freely past while the bag is being installed, it also does not allow for immediate full opening of the check valve on retrieval.  Speedbags require activation of the check valve and oscillation during recovery.  To pop open the check valve, please be sure to pull up hard 1 to 2 feet once on the tether, let the assembly drop back down to the starting point, REPEAT THIS PROCESS 4 TIMES, and then steadily recover the SpeedBag through the well screen to the surface.

Advantages to non-stop (in/out) sampling with no well equilibration time using the Speedbag:

  • For the first deployment at a new site, the user can collect the first sample using the Speedbag and then leave a fresh standard HydraSleeve or SpeedBag in the well screen to be recovered for the next round of sampling.
  • Immediate recovery will allow for significant time savings when conducting comparison studies.  Just one trip to the well when comparing HydraSleeves to pumped samples.
  • Where budgets are tight one weight can be utilized to sample all wells.  There is no need to have one weight per well; simply decontaminate the same weight and reuse it for all of the wells.
  • The in/out method utilitzed with the Speedbag reduces sample turbidity.  It only collects sediment that is suspended in the sample zone at the time of collection.  This eliminates the accumulation of in-well sediment on top of the sampler over time.
  • A 900 mls sample can be collected from any open well (2-inch schedule 40 and larger) at any time with sampling equipment that fits in your tool box.  Please remember to oscillate the Speedbag several times when using these in wells that are larger than 2 inch diameter (click for details) 
  • A smaller 500 mls (the original) SpeedBag is still available for smaller sample volumes (2-inch schedule 80 and larger)
  • Either of these SpeedBags can be easily shortened to recover less sample volume.  There is even a weld mark along the side of the 900 mls SpeedBag which marks the size needed to collect 500 mls of sample.  See instructions on shortening any HydraSleeve by clicking here.  Note:  A shorter bag means less drawdown.


  • Currently the minimum well diameter is 2-inch schedule 80 with a maximum sample volume of about 900 mls.


  • Has only been tested using a 2-inch Speedbag; has not been tested for 4-inch units.  (However, you can use this in/out method with any 2-inch, bottom-weighted HydraSleeve in a 4-inch well and immediately recover the sample without mixing, just remember to oscillate the HydraSleeve on recovery.)
  • When using the SpeedBag you must pull up hard 1 to 2 feet once on the tether to pop open the check valve; let the assembly drop back down to the starting point, repeat this process 4 times, and then steadily recover through the well screen to the surface.
  • The Speedbag is not intended for any top-weighted configurations.
  • The SpeedBag can also be shortened for less sample volume or shorter saturated screens.
  • The SpeedBag should be cycled up and down (in addition to the initial pull to activate the check valve) to collect samples in short water columns.

Cost for both sizes of SpeedBags (US Patent No. 9,726,013, No. 6,481,300; 6,837,120; others pending)  are $35.  Reusable bottom weights to be used with these Speedbags run between $12 and $25.   Spring Clips ($3.00) must be used with the Speedbag.  After decontamination, the weight and clips can be moved from well to well if you so choose.  The initial material cost to immediately retrieve 900 mls of sample volume using this set up will be about ~$60 - and much less if the cost of one weight is divided by the total number of wells on the site.

Please call 800-996-2225 orThis email address is being protected from spambots. You need JavaScript enabled to view it.l with questions.

Order online: link to  900 mls Speedbag catalog item.

Order Online: link to 500 mls SpeedBag catalog item.


WOW, the holiday season is once again within reach; so here's our holiday schedule.

For Thanksgiving we are closed November 22nd and 23rd.

At the end of the year we will be closed December 24th through January 1st, 2019 for the holidays. 

Please place your HydraSleeve orders for your year-end and early January requirements accordingly.

We will resume our normal schedule Tuesday, January 2nd, 2019.

We wish you, your families, and your colleagues a happy holiday season and look forward to serving you now and in the New Year!



Here's a simple solution to an interesting problem some HydraSleeve users may experience.  It's quite rare, but there are times when a HydraSleeve is retrieved with a hole blown in the bottom.  This is caused from dissolved gas coming out of the solution as the sample is recovered.  Once the sleeve is full and the check valve closes, as it is recovered up the water column, the external water pressure decreases, much like opening a bottle of champagne.  The decreased external pressure allows the dissolved gasses in the sample to expand and, on rare occasions, to the point where the internal pressure exceeds the capacity of the sleeve.  The sleeve will typically burst at the point where the pressure is highest, the bottom of the sleeve.  

 The solution is to add a small vent hole at the top of the HydraSleeve at the top of the check valve so the trapped gas can escape during HydraSleeve retrieval.


The following videos show what happens when a HydraSleeve is pressurized from the inside and then the same situation with a vent hole added to the top of the sleeve.



As you can see the vent hole solves the problem of trapped gas and the vented sleeve does not rupture.  If you think you have experienced this problem or that your sampling program may encounter this issue; just ask for a customized, vented, HydraSleeve. 

This is a simple solution for a simple problem utilizing HydraSleeves, as always....Simple by Design.




The SpeedBag HydraSleeve is a game-changer when we discuss equilibration times and well re-stabilization using HydraSleeves. 

So,  how long does it take for the well to return to ambient conditions after the HydraSleeve is installed?  With a SpeedBag the answer:  there is no need for an equilibration period.   The SpeedBags are specially designed to be immediately recovered after installation.



Speedbags  have a strategically-placed hole at the top of the bag that allows water to flow through during installation; thus minimizing drag-down.  Although standard HydraSleeves displace very little water during installation, SpeedBags actually eliminate the need for an equilibration time altogether.  Use of the SpeedBag can eliminate an extra trip to the job site on the first deployment.  There is also less set-up costs involved when switching to HydraSleeve sampling if you use SpeedBags.   Many sites have 100's of wells which would have previously required 100's of weights and clips.  With SpeedBags only 1 set of hardware is needed for the entire site - no matter how large or how small the site.





For information on equilibration times for traditional HydraSleeves please click here.



We have two new accessories to introduce today. Assembled SWA

When HydraSleeves are used for the size well they are intended - for example, when using 2-inch HydraSleeves in 2-inch wells - they fill in a 1:1 ratio.  When retrieving the HydraSleeve through the water column, most of the water is forced into the filling bag because the water is constricted by the diameter of the well screen.  Therefore a 30-inch HydraSleeve will capture a core sample of water from the 30 inch area directly above where the top of the HydraSleeves sits in the well.

If you try to use a 2-inch HydraSleeve in a 4-inch well, a lot of the water can escape around the outside of the filling HydraSleeve - it's not forced in as fast as it would be when used in a 2-inch well.   Previously we have recommended oscillating the HydraSleeve several times before retrieving them so that you can be sure the sleeve filled within the intended zone.  

Now we are introducing a new top attachment that will mimic the mouth of a 4-inch bag.  This 4- to 2-inch Adapter for use with our 2-inch Super/SkinnySleeve will allow you to have the same fill rate as if you were using a 4inch bag in the 4-inch well without repeated oscillation.   The sleeve is threaded between the top reducer and locking ring - follow the instructions for the assembly of the Super/SkinnySleeve PVC Collars.

Wide Mouth Adapter 4-2inch    








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  As you can imagine, if the fill rate is slower when 2-inch diameter HydraSleeves are used in the constricted environment of a 4-inch well; the same is exponentially true for HydraSleeves being used in a tank, lake, pool or any surface water sampling.

The new SWA (Surface Water Adapter) will get the job done in a 6-inch well or larger.  For the Surface Water Adapter we added an even wider mouth to the top of the smaller adapter seen above in order to accommodate larger diameter wells, surface water and tank sampling.

    SWA - SURFACE WATER ADAPTER 5-INCH OD - $70.00         


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  Both of these adapters require check valve activation with just one oscillation of the sleeve through the desired sampling zone.  Pull up on the line ~3 feet; allow it to drop back to the starting point; and then recover to the surface.  A HydraClamp will come in handy when removing the sleeve from the top adapter.  Place the clamp on the outside of the bag at the check valve to form a water tight seal.  Then remove the SWA or 4-2" Adapter and decant the sample into your lab's vials by following the instructions in the HydraSleeve Field Manual. 

Download the 1-sheet instruction for both of these adapters by clicking here.  Wide Mouth/SWA Instructions