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CO7000 Colorimeter


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Simple, inexpensive colorimetry for the small medical clinic. Ideal for use in hot, humid and remote locations.

The CO7000 is a portable colorimeter designed for use by doctors and medical technologists in small and medium sized clinics.

The unit has been tropicalised to protect it in hot and humid conditions (to 45°C and 70%, respectively); the 10 gelatin filters are encased in glass to prevent fungal growths appearing and the PCB has been conformally coated so that individual components are sealed to prevent corrosion. The instrument is powered by an internal rechargeable NiMH battery or by external power allowing it to be used where the power supply could be unreliable.

The CO 7000 is very easy to use as there are only three buttons, and the wavelength required is selected by rotating an integral filter wheel. The filters are at 400, 440, 470, 490, 520, 550, 580, 590, 680 and 700 nm enabling assays in the wavelength range 400 to 700 nm to be measured, and the instrument has been designed as an “open” system so that test kits for clinical and medical applications from virtually any supplier can be used.

Examples of routine assays that can be measured in serum and plasma include Albumin, Cholesterol, Glucose, Creatinine, Total Protein, Urea and those in cerebrospinal fluid include Glucose and Total Protein. The samples can be measured in either standard 10 mm pathlength cuvettes (a minimum of 400 µl is required) or in 10/12/16 mm diameter test tubes (adapters are included with the instrument). There is a drain hole at the bottom of the cell compartment so that spillages do not affect the instrument.


  • Single beam filter based spectrophotometer/colorimeter covering 400 to 700 nm
  • Fully tropicalised and portable for field use.
  • Low cost instrument
  • Easy three button operation
  • Rechargeable battery


Wavelength selection: 10 gelatin filters mounted in glass
Type: Visible 
Wavelength Range: 400 - 700nm
Wavelength Accuracy (+/-): n/a
Wavelength Reproducibility (+/-): n/a 
Light source: Tungsten Halogen 
Beam: Single Beam 
Optical System: Filters 
Bandwidth: 40nm
Detector: Diode 
Photometric Range: -0.3 to 1.99 A
Photometric Accuracy: <+/- 0.05A at 1A using neutral density filters 
Stray Light: <1%T at filter wavelength
Stability: n/a
Spectral Scanning: No 
Measurement Type: Fixed Wavelength (Abs/%T) 
Cell Compatibility: Cuvette 10mm 
Other Sample Containers: Test tube (10,12,16mm) included 
Cell Holder: Single Cell 
Accessory Options: Rechargeable battery and test tube adaptors included, serial printer* 
Temperature Control: None 
Method Storage: n/a 
Regulatory Compliance: CE 
Printer: Printer Serial* 
Data Output: Print* 
Display: LCD 
Export/ Data Storage: Serial Cable 
Data Interface: n/a 
Languages: English, Manuals in French, German, Italian and Spanish 
Power Requirements: 110-220V, 50/60Hz, 20VA 
Weight: 0.6 Kg (1.2lb) 
Dimensions (WxDxH): 15 x 18 x 6cm (5.9 x 7.1 x 2.4 inches) 
Certification: CE