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Big Universal Traps

Big Universal Traps from Agilent

Big Universal Traps utilize a layered, multi-adsorbent bed packing of the most effective, highest capacity adsorbent materials available today for the removal of oxygen, moisture, hydrocarbons, carbon dioxide, and carbon monoxide from helium gas streams. The volume of the various adsorbent materials in the Big Universal Trap was developed through rigorous testing and evaluation in order to ensure that breakthrough of the five major contaminant groups occurs as simultaneously as possible as each material achieves complete saturation.

One Big Universal Trap unit will easily purify the contents of thirteen "K" size cylinders of 99.997% purity helium to a cumulative level of 100 µg/L of O2, H2O, CO2, CO, and hydrocarbons at a flow rate of up to 8 L/min. All tube fittings are Swagelok stainless steel, fitted with 40 µm stainless steel frits for particulate control. Maximum pressure is 250 psi.

Big Universal Traps are more economical than other purifiers, offering nearly three times the capacity. Big Universal Traps are ideal for any GC or GC-MS application where helium is employed and assurance of purity is essential. Combining the contents of three individual in-line traps into a single unit reduces the number of potential leaks and the possibility of aspirating contaminants into the gas stream. A single purifier also simplifies installation and replacement.

Part Number Short Description Material Price Qty
RMSH-4 Big Universal Trap 1/4in fittings Helium Combination
RMSHY-4 Big Universal Trap 1/4in fittings Hydrogen Combination
RMSN-4 Big Universal Trap 1/4in fittings Nitrogen Combination
RMSA-2 Big Universal Trap 1/8in fittings Argon Combination
RMSH-2 Big Universal Trap 1/8in fittings Helium Combination
RMSHY-2 Big Universal Trap 1/8in fittings Hydrogen Combination
RMSN-2 Big Universal Trap 1/8in fittings Nitrogen Combination
RMSH-4-SS Big Universal Trap SS 1/4in fittings Helium Combination
RMSH-2-SS Big Universal Trap SS 1/8in fittings Helium Combination
UMC-5-2 Clip, Trap Mounting Universal 2 to 2-1/2in od Mounting Clip
  • Maximum Pressure Rating: 500 psig
  • Maximum Temperature Rating: 100 ºC
  • Maximum Flow Up: to 8 L/min
  • Total residual impurities based on (5) target contaminants above:
  • Resultant gas purity, based on the adsorption of O2, H2O, CO2, CO, and hydrocarbons: 99.99999%

Capacity Data

High Purity Helium 99.997% Removal Capacity
O2 <5 ppm 1.07 L
THC* <1 ppm 20 g
H2O <5 ppm 46 g

*Total Hydrocarbons, analysis limited to three contaminate groups


Effluent Concentration

Research Grade Helium 99.9999%
Impurities <1.0 ppm
N2 <0.5 ppm
O2 <0.5 ppm
THC* <0.1 ppm
CO+CO2 <0.1 ppm
H2O <0.2 ppm
H2 <0.2 ppm
Ar <0.1 ppm
Ne <0.5 ppm

*Total Hydrocarbons, analysis limited to three contaminate groups

Agilent General Chromatography Brochure (4.48 MB)
Your essential resource for supplies
Big Universal Trap Install Sheet (120.08 kB)

Installation guide for the Big Universal Traps

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