SciMed
Digital Photo Colorimeter — 400-700 nm, 8 Filters (400/420/480/500/520/540/620/680), Silicon Photodiode, Clinical + Teaching Lab
Digital Photo Colorimeter — 400-700 nm, 8 Filters (400/420/480/500/520/540/620/680), Silicon Photodiode, Clinical + Teaching Lab
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Digital photo colorimeter for absorbance-based quantitative analysis in clinical chemistry, water quality testing, biochemistry, and teaching labs. 400-700 nm visible spectrum coverage via 8 factory-calibrated glass filters (400 / 420 / 480 / 500 / 520 / 540 / 620 / 680 nm). Silicon photodiode detector, 2.5-digit LED display, absorbance 0-1.99 A, resolution 0.01 A. 10 mm path length matched glass tubes. Built-in voltage stabilizer (230V AC ±10%, 50 Hz). Includes 5-tube set, spare tungsten lamp, dust cover, manual. $249 direct — versus $650-$1,200 for Systronics 105 / Erma AE-11M / Elico CL 157 branded colorimeters.
Applications
- Clinical chemistry (basic) — hemoglobin (540/620 nm), glucose (505/540 nm), urea (620 nm), creatinine (520 nm), bilirubin (540/600 nm) — foundational rural / small-lab clinical chemistry
- Water quality testing — chlorine residual, iron, nitrate, phosphate, ammonia (municipal + drinking water labs)
- Environmental analysis — waste water COD, BOD, turbidity correlates
- Biochemistry teaching — Beer-Lambert law demonstration (essential undergraduate + high school biochem experiment)
- Food + beverage QC — color analysis of oils, juices, dyes
- Pharmaceutical assay — dye-content assays for coated tablets, syrup color verification
- Cosmetics + textile dye analysis — color-standard verification
- Soil + agricultural extract analysis — nutrient concentration (nitrate, phosphate)
Specifications
| Wavelength range | 400-700 nm (visible spectrum) |
|---|---|
| Filters | 8 high-standard glass filters: 400 / 420 / 480 / 500 / 520 / 540 / 620 / 680 nm |
| Photodetector | Silicon photodiode (photocell) |
| Display | 2.5-digit LED |
| Absorbance range | 0 to 1.99 A |
| Resolution | 0.01 A |
| Light source | 6.8V, 0.3A tungsten lamp (spare included) |
| Sample system | 10 mm path length matched glass test tubes (set of 5 included) |
| Power | 230V AC ±10%, 50 Hz — built-in voltage stabilizer for regions with unstable grid |
| Weight | 3 kg (portable bench unit) |
| Included accessories | Test tube set of 5 · spare tungsten lamp · dust cover · instruction manual |
Colorimeter vs spectrophotometer — which do I need?
Colorimeter (this instrument) = filter-based wavelength selection (8 discrete filters). Simple, robust, affordable, adequate for standard clinical chemistry + water testing + teaching where the analyte's optimal wavelength matches an available filter. Spectrophotometer = grating-based continuous wavelength selection (any wavelength 190-900 nm or wider). Required for spectral scans, unusual analytes, and precise wavelength optimization. Price differential: $249 colorimeter vs $1,500-$8,000 spectrophotometer. For 90% of clinical chemistry + water testing + undergraduate teaching, colorimeter is fully sufficient and cost-effective.
Best for
- Rural + primary care clinical chemistry labs (basic hemoglobin, glucose, urea)
- Undergraduate + high school biochemistry teaching (Beer-Lambert demonstrations)
- Municipal + drinking water quality labs
- Environmental compliance testing (waste water COD, BOD basics)
- Small pharma + nutraceutical QC (dye + color assays)
- Ayurvedic + herbal manufacturing color-standard verification
- International DDP shipping — massive rural clinical + academic markets globally
Buying for a rural clinic, teaching program, or water testing lab?
- Volume pricing on 3+ units (equip multi-lane teaching lab or municipal branch labs)
- Net-30 invoicing for verified academic + government + NGO accounts
- SAM.gov / VA compliant for federal labs
- Replacement tungsten lamps + matched tube sets stocked
- International DDP shipping — rural clinical + academic procurement globally
FAQ
Which filters do I need for hemoglobin, glucose, urea?
Hemoglobin (cyanmet method): 540 nm ✓ (included). Glucose (GOD-POD method): 505 nm — closest included is 500 nm, adequate. Urea (Berthelot method): 620 nm ✓. Creatinine (Jaffe method): 520 nm ✓. Bilirubin (van den Bergh method): 540 or 600 nm — 540 included, 600 close via 620. This 8-filter set covers the vast majority of clinical chemistry protocols.
How does this compare to Systronics 105 / Erma AE-11M?
Feature parity — same wavelength range, filter set, LED display class. Systronics + Erma have longer warranty + factory-calibration certificates. For teaching + rural clinical + water testing, SciMed delivers full function at 30-40% of premium OEM pricing.
110V US variant?
Standard is 230V. 110V variant available on request — email us before ordering if you need US-outlet plug-and-play. Or use step-up transformer (110→230V) as a permanent lab accessory.
Calibration?
Blank against distilled water (100% T / 0 A) before each session. For higher precision, run periodic potassium dichromate reference standards. Full calibration protocol in included manual.
User Manual (PDF)
Download the Operating Manual (PDF)
Browse all manuals by category at scimedstore.com/pages/user-manuals. Need a digital or printed copy, or have a question? Email sales@scimedstore.com.
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