Model EG-1 Econo™ Gradient Monitor



Econo Gradient Pump
Econo Gradient Pump

Suited for low pressure protein purification, this standalone peristaltic pump is capable of isocratic and gradient applications. The two-channel bidirectional peristaltic pump is capable of flow rates from 0.002–40 mL/min. The system can be hooked up to the Model 2110 or BioFrac fraction collector and is coldroom compatible.

Discontinued Product
The EG-1 Econo Gradient Monitor has been discontinued. However, we will continue to provide support for customers with this product.

Conductivity monitoring is essential to optimize protein purification methods and to confirm the efficiency of chromatographic separations. The Model EG-1 Econo gradient monitor makes gradient monitoring and conductivity determination effortless.

Key Features

  • External flow cell for placement flexibility
  • Real-time monitoring of conductivity in Siemens units
  • Custom-scaled monitoring of gradient progression
  • Coldroom compatibility
  • Luer-lok fittings for quick connection
  • Flow cell can be fitted with 1/4–28 flat-bottom threaded fittings for connection to FPLC and HPLC systems
  • IEC 61010 safety certification
Operating mode Conductivity, in Siemens (S)
Operating temperature 4–40°C
Sensitivity ranges (full scale) 0–10 µS, 0–100 µS, 0–10 mS,
Output signal 0–1 V
Power requirements 90–264 V, 50–60 Hz (depending upon power adaptor used)
Power consumption 20 W maximum
Noise Short term: <0.1 µS
Long term: <0.5 µS
Linearity ±0.5% full scale
Accuracy ±2% full scale
Drift <0.5 µS/hr/°C
Dimensions Control unit (W x L x H): 15.60 x 22.86 x 8.89 cm
Flow cell (diameter x L): 3.1 x 3.8 cm
Weight Control unit: 600 g
Case material Chemical and fire resistant polypropylene
Regulatory CSA: C22.2 No. 151-M1986
Compliance TUV: EN61010–1:1993 CE: EN50082–2:1995 EN55011: 1991 Class A
Flow Cell  
Type Flow through, externally mounted
Temperature compensation 0–60 µC
Internal volume 8 µl, swept volume
Cell constant Approximately 40°
Maximum operating pressure 60 psi, 4 bar, or 0.41 mPa
Cable length 1.22 m
Wetted parts Titanium, Kel-F, and Tefzel
Fittings Removable luer (will also accept 1/4"–28 flat bottom fittings)

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(Discontinued) Model EG-1 Econo™ Gradient Monitor

Gradient monitor, for use with FPLC and HPLC, includes 100/120 V (U.S.) power adaptor, flow cell, system cable
Discontinued item

This product is no longer available. Please contact technical support for more information on replacement product.
Number Description Options
M7318150 Instruction Manual, Model EG-1 Econo Gradient Monitor, Rev H Click to download