Solinst Model 407 Bladder Pumps

The Solinst Bladder Pump allows consistent, high quality samples in all types of applications.  It offers excellent performance and reliability. With Solinst Bladder Pumps there is the assurance that there is no air/water contact during sampling. It meets the most rigorous US EPA standards for VOC groundwater monitoring.

The bladder ensures that drive air or gas does not contact the sample, thus avoiding degassing or contamination of the sample. Solinst Bladder Pumps are rugged and long lasting.  PTFE bladders are ideal for dedication, while less expensive polyethylene bladders are available for those that prefer to change bladders after each use. Bladders and intake filters are easily replaced in the field in just a few minutes. No special tools required.

Excellent for either regular flow or low flow sampling, the stainless steel pumps can lift from depths up to 150 m (500 ft) below grade. 

Low Flow Purge and Sampling

Low flow sampling offers excellent quality samples by reducing turbulence.  It also reduces purge volumes, and thus sampling time and disposal costs. When using a Solinst Model 464 Electronic Pump Control Unit, the Solinst Bladder Pump can be adjusted to provide continuous output of 100 ml/min. or less.

Use of a Flow-Through Cell System during low flow sampling, allows the continuous analysis of purge water, in-line, as it flows, so that sampling can begin as soon as the readings stabilize.

Packers are also available to further reduce purge volumes and to speed sampling times.

Features

Stainless Steel: 1.66" Ø (42 mm) and 1" Ø (25 mm) with 316 stainless steel body.

Non-Vertical Applications: Pumps operate effectively at almost any angle and can be placed under landfills, tailings, storage tanks or contaminant plumes.

Leachate/Product Pumping: Pneumatic drive pumps are well suited for pumping contaminant liquids. Strong solvents and corrosive chemicals can be easily and economically pumped.

Survives Dry Pumping, Dirty Air and Sand: Solinst bladders are not damaged by operation in sediment laden water, or in dry pumping conditions.

Freeze Protection Kit: Optional accessory available to prevent freezing in the sample line.

Benefits

High Quality Samples: Consistently accurate samples with excellent VOC sample integrity.

Simplicity: The controller, air compressor and flow-through cell can be easily transported by one person to any site.  Hookup to the pump is by compression fittings. 

Cost Savings: Reduced need for repeat sampling and shorter time required for each sampling round.  Low purge volumes ensure rapid sampling.

Bladders: Durable PFAS-free PTFE bladders are ideal for dedication. Inexpensive polyethylene is also available.

The Solinst Bladder Pump

Solinst Bladder Pumps are manufactured from 316 stainless steel and have PTFE check balls.  The bladder most frequently used is PTFE, however polyethylene bladders are also available. This is the ideal sampling pump for most types of municipal, industrial and general environmental applications, especially where VOC analysis of the sample is important.

The pump body of the standard Solinst Bladder Pump is a convenient 1.66" dia. (42 mm) and comes in lengths of 2 ft and 4 ft (0.6 m and 1.2 m). 1" dia. (25 mm) bladder pumps are also available for narrower applications and for use in the Waterloo Multilevel System. (See Model 401 Data Sheet.)

Portable Bladder Pumps

For less frequent sampling, and to allow access to multiple monitoring wells, even in remote locations, portable bladder pump systems are available.

They are supplied on a free-standing reel. The rugged systems are very convenient and easy to transport. Tubing fittings on the reels and controller are compression fittings, allowing quick set up in the field. The Solinst Model 103 Tag Line can be used to lower and support the pump in the well (see Model 103 Data Sheet).

Dedicated Well Caps

The caps slip easily onto 2" dia. (50 mm) wells. Adaptors to fit 4" dia. (100 mm) wells are also available. They have quick connect fittings for the drive and sample tubing.

Dedicated Systems

For long term monitoring it is always best to dedicate bladder pumps. This avoids cross-contamination and saves time without the need to decontaminate between sampling events. There is the assurance of no air/water contact during sampling, and the confidence that no cross-contamination will occur from the use of portable equipment.  

Solinst well caps are designed for ease of use. The vented caps have a quick-connect attachment for the controller unit/air supply. Fittings are provided for both 1/4" OD
 (6 mm) and 3/8" OD (9 mm) tubing.  Each cap comes with a 3 ft (0.9 m) length of discharge line, which is easily replaced, as required.

For water level monitoring there is an access hole to fit a Solinst Model 101 Water Level Meter or Levelogger. An eyebolt is provided for a pump support cable or for suspension of a Solinst Levelogger, (see Model 3001 Data Sheet) or other device