Bionics Scientific manufactures digital photo colorimeters for laboratory measurement of absorbance, transmittance and concentration. Models are available with 5-filter and 8-filter configurations for pharmaceutical, chemical, food, agriculture, water-testing, educational and research laboratories.
A digital photo colorimeter is a laboratory instrument used to measure the absorbance, transmittance and concentration of a solution at selected wavelengths. The instrument uses a light source, optical filters and a photodetector to measure the intensity of light passing through a sample.
Photo colorimeters are commonly used where routine quantitative analysis of coloured solutions is required. Different models provide different measurement outputs, filter configurations and data-handling capabilities depending on the laboratory application.
A digital photo colorimeter passes light of a selected wavelength through a sample solution. The optical filter selects the required wavelength, while the photodetector measures the light transmitted through the sample. The instrument then converts the detected signal into the applicable measurement, such as transmittance or absorbance. Selected models can also display concentration and K Factor values.
| 5-filter and 8-filter configurations | 400 to 700 nm wavelength range on listed models |
| Minimum sample volume from 1 ml on applicable models | Absorbance and transmittance measurement |
| Concentration and K Factor on applicable models | LED or LCD display depending on model |
| Soft-touch keypad on applicable models | RS232C interface available on selected models |
| Matched glass test-tube sample system | Different filter configurations for laboratory applications |
For other analytical and measurement instruments, explore our complete range of laboratory meters .
The specifications below cover the available digital photo colorimeter configurations. Compare the wavelength range, filters, measurement outputs, display and other features to select a suitable model for your laboratory requirements.
| Specification | BST/PCM/1312 | BST/PCM/312 | BST/PCM/313 | BST/PCM/1311 | BST/PCM/1313 |
|---|---|---|---|---|---|
| Wavelength / Range | 400–700 nm | 400–700 nm | 400–700 nm | 400–700 nm | 400–700 nm |
| Filters | 8 Filters | 8 Filters | 5 Filters | 8 Filters | 8 Filters |
| Filter Wavelengths | 420, 440, 490, 520, 540, 570, 600, 700 nm | 400, 450, 490, 520, 540, 570, 620, 680 nm | 450, 490, 540, 620, 680 nm | 400, 450, 490, 520, 540, 570, 620, 680 nm | 400, 450, 490, 520, 540, 570, 620, 680 nm |
| Display | 16 × 2 Alphanumeric LCD | 2½ Digit LED | 2½ Digit LED | 3 Digit 7 Segment LED | 3 Digit 7 Segment LED |
| Transmittance | 0–100% T | OD output | OD output | 0–100% | 0–100% |
| Absorbance | 0–1.99 A | OD: 0–1.99 | OD: 0–1.99 | 0–1.99 A | 0–1.99 A |
| Resolution | 1% T, 0.01 Abs., 1 Conc., 1 K Factor | OD: 0.01 | OD: 0.01 | 1% T, 0.01 Abs. | 1% T, 0.01 Abs., Conc. 1, K Factor 1 |
| Concentration | 0–19999 | — | — | — | 1.0–999 |
| K Factor | 1–19999 | — | — | — | 1.0–999 |
| Minimum Sample Volume | Uses 10 mm matched glass test tubes | 1 ml | 1 ml | 1 ml | 1 ml |
| Detector | Silicon Photodiode / Photo Cell | Photo Cell / Photo Diode | Photo Cell / Photo Diode | Not separately specified | Not separately specified |
| Light Source | 6.8 V, 0.3 Amp Tungsten Lamp | 6.8 V, 300 mA Tungsten Lamp | 6.8 V, 300 mA Tungsten Lamp | 6.3 V, 0.3 Amp Tungsten Lamp | 6.3 V, 0.3 Amp Tungsten Lamp |
| Data Storage | Up to 100 samples | — | — | — | — |
| Interface | RS232C on request / printer interface | — | — | — | — |
| Power Supply | 230 V AC ±10%, 50 Hz | 230 V ±10% AC, 50 Hz | 230 V ±10% AC, 50 Hz | 230 VAC ±10%, 50 Hz | 230 VAC ±10%, 50 Hz |
| Weight | 2.5 kg approx. | 2 kg approx. | 2 kg approx. | 2½ kg approx. | 2½ kg approx. |
Note: Specifications vary by model and configuration. Confirm the required measurement range, filters, interfaces and accessories when requesting a quotation.
When selecting a digital photo colorimeter, consider the wavelength range, number of optical filters, required measurement outputs, minimum sample volume, display type and interface requirements. The correct configuration depends on the laboratory test method, sample type and required measurement.
Digital photo colorimeters are used for routine laboratory measurements in applications where the optical response of a solution needs to be evaluated at a selected wavelength. Typical application areas include:
| Pharmaceutical Laboratories | Water Testing Laboratories | Chemical Laboratories |
| Food and Beverage Testing | Agricultural Laboratories | Biotechnology Laboratories |
| Hospitals and Clinical Laboratories | Educational Laboratories | Textile Testing |
A photo colorimeter generally uses selected optical filters to perform measurements at specific wavelength bands, while a spectrophotometer is designed to provide wavelength selection across a broader or more precisely controlled spectral range. The appropriate instrument depends on the analytical method, wavelength requirements, measurement accuracy and type of sample being tested.
For laboratory methods involving absorbance measurements, users can also refer to the United States Pharmacopeia (USP) for information about recognized pharmaceutical standards and analytical methods.
Digital photo colorimeter pricing depends on the selected model, number of filters, display system, measurement outputs, data-storage capability and optional interfaces. For current price, warranty, delivery and model availability, share your application and required specifications through the enquiry form.
Bionics Scientific supplies digital photo colorimeters and other laboratory testing instruments for pharmaceutical facilities, research laboratories, hospitals, educational institutes, water-testing laboratories and industrial applications. Different configurations are available to suit routine laboratory measurement requirements.
For model-selection assistance, current pricing, warranty and delivery information, submit your requirements through the enquiry form.
You may also explore related laboratory equipment according to your testing requirements:
Share your required wavelength range, filter configuration, measurement parameters and application. Our team can help you select a suitable digital photo colorimeter model.
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