Product Description
A pocket-sized tester is often all it takes to confirm a reading on the spot without setting up a bench meter. OHAUS Starter Pen Meters provide economical, accurate measurement of pH, ORP, conductivity, salinity, TDS and dissolved oxygen in a slim handheld format.
This listing is for OHAUS item number 30393200: Starter Multiparameter Pen Meter ST20M-C, pH, Conductivity and Salinity, 0.00-19.99 mS/cm. Each pen uses an ABS housing, an LCD display and four included AG13 button batteries, with automatic shut-off after six minutes of non-use to extend battery life. ST10 models offer simple one-button operation, while ST20 models add temperature display and automatic temperature compensation with a three-button interface. Electrodes are easily replaceable, and many models carry an IP67 rating for wet conditions. LIGHT LABS supplies the OHAUS line with knowledgeable support from our Englewood, Colorado team.
Key Features
- Pocket Format – slim pen design for quick checks anywhere
- Replaceable Electrodes – extend the life of the meter
- Auto Shut-Off – powers down after six minutes of non-use
- ST20 Upgrades – temperature display and automatic temperature compensation
- Wide Parameter Choice – pH, ORP, conductivity, salinity, TDS and DO models
Specifications
| Item Number | 30393200 |
| Brand | OHAUS |
| Description | Starter Multiparameter Pen Meter ST20M-C, pH, Conductivity and Salinity, 0.00-19.99 mS/cm |
| Meter Type | Conductivity;pH;Salinity |
| Measurement Range | 0.0 – 10.0 ppt;0.0 – 99.0 °C;0.00 – 14 pH;0.00 – 19.99 ms/cm |
| Accuracy | ±2.0 % F.S.;± 0.05 pH / ± 0.5 °C |
| Measurement Resolution | 0.1 °C;0.1 ppt;0.01 pH;0.01ms/cm |
| Display | LCD |
| ATC | Yes |
| Temperature compensation | Not Applicable |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Calibration | 3 Point |
| Conductivity accuracy (±) | 2 % |
| Conductivity measuring range | 0.00 – 19.99 mS/cm |
| Dimensions | 1.5 in x 7.28 in x 1.77 in (38 mm x 185 mm x 45 mm) (LxHxW) |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| pH accuracy (±) | 0.05 |
| pH measuring range | 0 – 14 |
| Power | 4 AG13 Batteries (Included) |
| Protection Rating | IP67 |
Related Models
- 30073970 – Starter pH Pen Meter ST10, 0.00-14 pH, ±0.1 pH, IP67, Battery Powered
- 30073972 – Starter Conductivity Pen Meter ST10C-A, 0.0-199.9 µS/cm, ±2.5% FS, IP67
- 30073973 – Starter Conductivity Pen Meter ST10C-B, 0-1,999 µS/cm, ±2.5% FS, IP67
- 30073974 – Starter Conductivity Pen Meter ST10C-C, Pocket Conductivity Tester
- 30073984 – Starter ORP Pen Meter ST10R, Pocket Oxidation-Reduction Potential Tester
- 30073982 – Starter Salinity Pen Meter ST10S, 0.0-10.0 ppt, ±2.5% FS, IP67
- 30073978 – Starter TDS Pen Meter ST10T-A, 0.0-100.0 mg/L, ±2.5% FS, IP67
- 30073979 – Starter TDS Pen Meter ST10T-B, 0-1,000 mg/L, IP67
- 30073971 – Starter pH Pen Meter ST20, 0.00-14 pH, ±0.05 pH, ATC, 3-Point Calibration
- 30073975 – Starter Conductivity Pen Meter ST20C-A, Pocket Conductivity Tester with ATC
- 30073976 – Starter Conductivity Pen Meter ST20C-B, Pocket Conductivity Tester with ATC
- 30073977 – Starter Conductivity Pen Meter ST20C-C, 0.00-19.99 mS/cm, ±1.5%, ATC
- 30073986 – Starter Dissolved Oxygen Pen Meter ST20D, 0.0-19.9 mg/L, ATC, IP67
- 30393199 – Starter Multiparameter Pen Meter ST20M-B, Pocket pH and Conductivity Tester
Applications
- Hydroponics and agriculture
- Aquariums and aquaculture
- Pool and drinking water checks
- Classroom science
- Quick QC spot checks
