Overview
For over a century, OHAUS has perfected the art of measurement through our line of weighing products. Taking the same approach to our weighing equipment, OHAUS now delivers Starter ST400D - a practical, affordable, low-maintenance DO Portable Meter equipped with optical technology. The ST400D is ideal for applications that require simple yet accurate DO measurements.
Models
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Ohaus
SKU:
oh-30378543
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Starter 400D Do Portable St400D Specifications |
|
---|---|
Accuracy | ±0.2 mg/L(< 8 mg/L) or ±0.3 mg/L(8~20 mg/L); ±0.3 °C |
Accuracy (Temperature) | 0.3 °C |
Accuracy DO | 0.2 ppm |
Auxiliary Display Model | Color LCD Graphics |
Battery Life | 12 hours with Disposable Batteries |
Internal Calibration | 2 Point |
Electrode | STDO21 (Included) |
In Use Cover | No |
Measurement Range | 0.00 – 20.0 mg/L(ppm); 0 – 50°C |
Measurement Range (Temperature) | 0 °C ; 50 °C |
Measurement Range DO | 0 ppm ; 20 ppm |
Measurement Resolution | 0.01 mg/L; 0.1%; 0.1 °C |
Net Weight | 0.35 lb (0.16 kg) |
Parameter | Dissolved Oxygen |
Resolution (DO) | 0.01 |
Temperature Compensation | Automatic |
Temperature Resolution | 0.1 °C |
Temperature Sensor | 10 KΩ NTC |
Working Environment | 41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing) |

Ohaus
St400D-B
SKU:
oh-30378541
Femto Price: $832.00
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Starter 400D Do Portable St400D-B Specifications |
|
---|---|
Accuracy | ±0.2 mg/L(< 8 mg/L) or ±0.3 mg/L(8~20 mg/L); ±0.3 °C |
Accuracy (Temperature) | 0.3 °C |
Accuracy DO | 0.2 ppm |
Auxiliary Display Model | Color LCD Graphics |
Battery Life | 12 hours with Disposable Batteries |
Internal Calibration | 2 Point |
Electrode | STDO21 (Availabe as product) |
In Use Cover | No |
Measurement Range | 0.00 – 20.0 mg/L(ppm); 0 – 50°C |
Measurement Range (Temperature) | 0 °C ; 50 °C |
Measurement Range DO | 0 ppm ; 20 ppm |
Measurement Resolution | 0.01 mg/L; 0.1%; 0.1 °C |
Net Weight | 0.35 lb (0.16 kg) |
Parameter | Dissolved Oxygen |
Resolution (DO) | 0.01 |
Temperature Compensation | Automatic |
Temperature Resolution | 0.1 °C |
Temperature Sensor | 10 KΩ NTC |
Working Environment | 41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing) |

Ohaus
St400D-G
SKU:
oh-30378542
Femto Price: $1,998.00
×
Starter 400D Do Portable St400D-G Specifications |
|
---|---|
Accuracy | ±0.2 mg/L(< 8 mg/L) or ±0.3 mg/L(8~20 mg/L); ±0.3 °C |
Accuracy (Temperature) | 0.3 °C |
Accuracy DO | 0.2 ppm |
Auxiliary Display Model | Color LCD Graphics |
Battery Life | 12 hours with Disposable Batteries |
Internal Calibration | 2 Point |
Electrode | STDO21 (Included) |
In Use Cover | No |
Measurement Range | 0.00 – 20.0 mg/L(ppm); 0 – 50°C |
Measurement Range (Temperature) | 0 °C ; 50 °C |
Measurement Range DO | 0 ppm ; 20 ppm |
Measurement Resolution | 0.01 mg/L; 0.1%; 0.1 °C |
Net Weight | 0.35 lb (0.16 kg) |
Parameter | Dissolved Oxygen |
Resolution (DO) | 0.01 |
Temperature Compensation | Automatic |
Temperature Resolution | 0.1 °C |
Temperature Sensor | 10 KΩ NTC |
Working Environment | 41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing) |