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Mobile Phase Accessories

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Last Drop Filter

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The flat filter element sits parallel to the bottom of the mobile phase reservoir, allowing the filter to draw 98% of the mobile phase without drawing air into the system. Conventional cylindrical mobile phase filters begin to draw air into the system when approximately 10% of the solvent remains in the reservoir. The Last Drop Filter allows more analyses per batch of mobile phase and helps reduce hazardous waste. 22.1 mm OD.

Waste Overflow Indicator

for LC Systems

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  • Avoid messy pooling around mobile phase waste containers.
  • Audible alarm instantly alerts user, preventing overflow.
  • Compact, battery-operated unit.
  • Available for 4-liter and GL-45 solvent bottles.

Hub-Cap Filter Kit

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Kit includes: bottle adaptor, bottle adaptor nut, filter inlet cap, grid support, vacuum hose barb, tube compression fitting, 47 mm grid, 47 mm 0.22 µm filter membrane, 47 mm 0.45 µm filter membrane, 1/4" OD x 1/8" ID ultra chemical resistant, FEP (fluorinated ethylene propylene)-lined Tygon tubing (3'), 6" x 6" box with shrink wrap insert. Includes universal threads designed for 4L or Wheaton bottles.

Hub-Cap Adaptors

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Allow the use of the Opti-Cap Top with 4-liter solvent bottles.

Opti-Cap Adaptors

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Allow the use of the Hub-Cap Top with GL-45 solvent bottles.

DEGASi Mobile Phase Degasser

Ultra-high degassing efficiency in a small, durable unit.

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  • ZHCR patented control (variable RPM) maintains constant vacuum to eliminate baseline fluctuations.
  • Systec AF membrane is highly gas permeable, allowing a small 480 μL chamber volume for fast start-up and equilibration.
  • Flow path is biocompatible and offers broad chemical compatibility.
  • Continuous vacuum system monitoring to ensure optimum operational conditions are maintained.
  • Advanced error and leak-checking functions (refer to instruction manual).
  • Use with any HPLC system.
  • CE & RoHS compliant.

Bluestem Glass Solvent Filter

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  • Restek Bluestem glass solvent filter provides clean mobile phase to extend the life of columns and pump seals.
  • 15 µm borosilicate glass frit sits lower than conventional glass filters to draw more mobile phase from each bottle.
  • Blue filter stem allows instant visual confirmation of upright filter orientation.
  • Connects to standard 1/8" OD (3.2 mm) PTFE tubing using your existing frit adaptor (also sold separately as cat.# 26392).

Hub-Cap 4-Liter Bottle Tops

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Hub-Cap bottle tops are a great way to neatly keep your mobile phase lines where they belong. Use them instead of plastic paraffin film, aluminum foil, or tape on your mobile phase reservoirs.

UHP Pulse Dampener

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The UHP pulse dampener provides minimal flow pulsation at system pressures up to 18,000 psi. Its low dead volume (220 µL at atmospheric pressure) reduces overall system volume for UHP applications. The UHP pulse dampener has a stainless steel fluid path.

Ternary Tee Mixer

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  • Reduced baseline noise.
  • Increased sensitivity.
  • Improved gradient accuracy for more reproducible results.
  • Increased reaction efficiency in post-column derivatization.
  • Stainless steel.

Sidewinder LC Heater/Cooler Temperature Control Module and Column Holder

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  • Operation range: 555 °C, ±0.2 °C.
  • Ability to program multiple temperature points.
  • Accommodates columns up to 30 cm in length and 7.8 mm ID.
  • Compact design.

Sidewinder LC Column Heater

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  • Easy to set up!
  • Operation range: 5 °C above ambient to 85 °C, ±1 °C.
  • Lightweight, compact design fits in small spaces.
  • Column holder can be placed in any orientation.

FlatLine Pulse Damper

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  • Rupture-proof, no diaphragmminimal risk of failure or leaks.
  • Clean flush-out designno sample carryover.
  • Low internal volumenegligible effect on analyte bandwidth.

HyperShear Static In-Line Mixers

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  • Reduced baseline noise.
  • Increased sensitivity.
  • Improved gradient accuracy for more reproducible results.
  • Increased reaction efficiency in post-column derivatization.
  • Stainless steel or PEEK.

QuickSplit Post-Column Flow Splitters

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Fluid resistor technology eliminates adjustments to capillary tubing for optimizing split ratio. Wide range of interchangeable resistors available.

MiniPulse Pulse Dampener

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  • Compact unit (2.5" x 1.5") can be placed almost anywhere.
  • Small, 160 µL dead volume at atmospheric pressure.
  • PEEK unit can withstand pressures to 5,000 psi (34,474 kPa).
  • 316 stainless steel unit can withstand pressures to 6,000 psi (41,369 kPa).

Solvent Debubbler

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Bubbles in an LC system can cause check valve malfunctions and pump cavitation, seriously affecting pump performance. The debubbler removes bubbles from the fluid stream before it enters the pump.

Special geometry at the base of the housing allows bubbles entrained in the inlet fluid stream to rise and be trapped in the reservoir. The gas/liquid interface is easily visible through the translucent wall of the device. Loosening the airtight cap releases the trapped gas. The debubbler features a polypropylene body and bracket; universal inlet and outlet connecting tips are made of 316 stainless steel and accept 0.063", 0.085", and 0.125" ID tubing.

High-Pressure Cup-Type In-Line Filter

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This high-pressure cup-type filter can be used in fluid streams operating to 15,000 psi (103,421 kPa). The cup-shaped filter elements have a large (2.5 cm2) surface area to give long operating lifetime. Mounted in screw-type adapters, they are easily removed for cleaning. Normally, backflushing and cleaning in an ultrasonic bath with an appropriate solvent will restore them. If they become permanently clogged, replacement elements are available.
Housings and all wetted parts are 316 stainless steel. Filters are packaged with gland nuts and ferrules. A bulkhead type fitting is available for thru-panel mounting. Tubing 1/16" OD; connectorsCPI.

Membrane Microfiltration Glassware

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This 47 mm filtration apparatus with fritted glass support is recommended for routine filtration of corrosive liquids and removal of particles from LC solvents. The ground joint connection eliminates phthalate contamination that can occur when using silicone or neoprene stoppers. The support base has a coarse-porosity glass frit and an integral vacuum connection, located above the drip tip to prevent contamination of the vacuum line with filtrate droplets. Each apparatus includes a funnel, an anodized aluminum clamp, a 47 mm fritted glass support base, and a filtration flask.

Mobile Phase Sparge Filters

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The sparge filter is an inexpensive way to prepare and maintain mobile phases free of dissolved gas. Filters are made from 316 stainless steel and PEEK, and they are compatible with most solvents. Connects to standard 1/8" OD (3.2 mm) PTFE tubing.

Low-Pressure CPI Inlet Filter for Mobile Phase Reservoir

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A 316 stainless steel knurled cap and Tefzel CPI ferrule seal to 1/8" OD PTFE tubing when finger-tightened onto the precision-machined filter holder. The filter element is replaceable. Standard 10 µm porosity protects delicate pump components from particles but introduces very little pressure drop. 1/8" OD. May be used as a helium sparging diffuser.

Low-Pressure Slip-On Inlet Filter for Mobile Phase Reservoir

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A 316 stainless steel tip with a Tefzel collar seals to a corrosion-resistant 316 stainless steel filter element. The slip-on filter easily attaches to the pump inlet line, without the use of wrenches. The universal 1/8" OD tip accommodates standard PTFE tubing inner diameters. The cylindrical filter is standard 10 µm porosity. Fits Altex, ISCO, LDC, Varian, Waters, PerkinElmer, and other pumps.

LO-Pulse Pulse Damper

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The LO-Pulse Pulse Damper is a patented, wide-dynamic-range 316 stainless steel device that smooths pulsations and maintains constant flow at system pressures from 500 to 6,000 psi (3,447 to 41,369 kPa). The flow path volume is only 0.9 mL and the path is efficiently swept, eliminating solvent memory effects when changing mobile phases.
The LO-Pulse pulse damper also is available in a space-saving, economical kit that includes hardware for mounting the pulse damper on a bracket, or for installing feet on it for bench-top use.

Eco-Cap Bottle Top, ETFE

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Fits all standard GL-45 bottles; has two 1/8-inch holes and one 1/16-inch hole for tubing. Holes are not threaded.

Opti-Cap GL-45 Bottle Tops

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The most economical way to helium-sparge and deliver LC mobile phases. Opti-Cap tops fit all standard GL-45 bottles and have two 1/8" holes and one 1/16" hole for tubing. All three openings are designed for threaded PEEK plugs.