Overview
After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of pen meters that provide accurate measurement of pH, oxidation-reduction potential (ORP), conductivity, salinity, and total dissolved solids (TDS). Starter pen meters are the economical option when you are simply looking for meters that will provide accurate measurement without restriction.
Models
Ohaus
SKU:
oh-30073970
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Starter Pen Meters St10 Specifications |
|
|---|---|
| Accuracy | ±0.1 pH |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Measurement Range | 0.00 – 14 pH |
| Measurement Resolution | 0.1 pH |
| Meter Type | pH |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| pH accuracy (±) | 0.1 |
| pH measuring range | 0 ; 14 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10C-A
SKU:
oh-30073972
Femto Price: $109.00
×
Starter Pen Meters St10C-A Specifications |
|
|---|---|
| Accuracy | ±2.5% FS |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0.0 – 199.9 µS/cm |
| Measurement Range | 0.00 – 199.9 μs/cm |
| Measurement Resolution | 0.1 μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10C-B
SKU:
oh-30073973
Femto Price: $109.00
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Starter Pen Meters St10C-B Specifications |
|
|---|---|
| Accuracy | ±2.5% FS |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0 – 1999 µS/cm |
| Measurement Range | 0 – 1999 μs/cm |
| Measurement Resolution | 1μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10C-C
SKU:
oh-30073974
Femto Price: $109.00
×
Starter Pen Meters St10C-C Specifications |
|
|---|---|
| Accuracy | ±2.5% FS |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0.00 – 19.99 mS/cm |
| Measurement Range | 0.00 – 19.99 ms/cm |
| Measurement Resolution | 10 μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10R
SKU:
oh-30073984
Femto Price: $178.00
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Starter Pen Meters St10R Specifications |
|
|---|---|
| Accuracy | 2mV |
| Accuracy ± (mV) | 2 mV |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Measurement Range | -1,000 mV ; 1,000 mV |
| Measurement Resolution | 1 mV |
| Meter Type | ORP |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10S
SKU:
oh-30073982
Femto Price: $109.00
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Starter Pen Meters St10S Specifications |
|
|---|---|
| Accuracy | ±2.5% FS |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0.0 – 10.0 ppt |
| Measurement Range | 0.0 – 10.0 ppt |
| Measurement Resolution | 0.1 ppt |
| Meter Type | Salinity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10T-A
SKU:
oh-30073978
Femto Price: $123.00
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Starter Pen Meters St10T-A Specifications |
|
|---|---|
| Accuracy | ±2.5% FS |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0.0 – 100.0 mg/L |
| Measurement Range | 0.0 – 100.0 mg/L |
| Measurement Resolution | 0.1 mg/L |
| Meter Type | TDS |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St10T-B
SKU:
oh-30073979
Femto Price: $123.00
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Starter Pen Meters St10T-B Specifications |
|
|---|---|
| Accuracy | ± 10mm |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 2.5 % |
| Conductivity measuring range | 0 – 1000 mg/L |
| Measurement Range | 0.0 – 1000 mg/L |
| Measurement Resolution | 1 mg/L |
| Meter Type | TDS |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 1 |
| Protection Rating | IP67 |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20
SKU:
oh-30073971
Femto Price: $142.00
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Starter Pen Meters St20 Specifications |
|
|---|---|
| Accuracy | ± 0.05 pH / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | 3 Point |
| Measurement Range | 0.0 – 99.0 °C; 0.00 – 14 pH |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 0.01 pH |
| Meter Type | pH |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| pH accuracy (±) | 0.05 |
| pH measuring range | 0 ; 14 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20C-A
SKU:
oh-30073975
Femto Price: $159.00
×
Starter Pen Meters St20C-A Specifications |
|
|---|---|
| Accuracy | ± 1.5% / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | 1 Point |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0.0 – 199.9 µS/cm |
| Measurement Range | 0.00 – 199.9 μs/cm; 0.0 – 99.0 °C |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 0.1 μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20C-B
SKU:
oh-30073976
Femto Price: $159.00
×
Starter Pen Meters St20C-B Specifications |
|
|---|---|
| Accuracy | ±0.1 pH |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | 1 Point |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0 – 1999 µS/cm |
| Measurement Range | 0.0 – 99.0 °C; 0 – 1999 μs/cm |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 1μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20C-C
SKU:
oh-30073977
Femto Price: $159.00
×
Starter Pen Meters St20C-C Specifications |
|
|---|---|
| Accuracy | ± 1.5% / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | 1 Point |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0.00 – 19.99 mS/cm |
| Measurement Range | 0.0 – 99.0 °C; 0.00 – 19.99 ms/cm |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 10 μs/cm |
| Meter Type | Conductivity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20D
SKU:
oh-30073986
Femto Price: $553.00
×
Starter Pen Meters St20D Specifications |
|
|---|---|
| Accuracy | ±0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Internal Calibration | 1 Point |
| Measurement Range | 0.0 – 19.9 mg/L |
| Measurement Resolution | 0.1 mg/L |
| Meter Type | Dissolved Oxygen |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20M-B
SKU:
oh-30393199
Femto Price: $181.00
×
Starter Pen Meters St20M-B Specifications |
|
|---|---|
| Accuracy | ±2.0 % F.S.; ± 0.05 pH / ± 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Internal Calibration | 3 Point |
| Conductivity Accuracy (±) | 2 % |
| Conductivity measuring range | 0 – 1999 µS/cm |
| Measurement Range | 0.0 – 1000 mg/L; 0.0 – 99.0 °C; 0.00 – 14 pH; 0 – 1999 μs/cm |
| Measurement Resolution | 1μs/cm; 0.01 pH |
| Meter Type | TDS; Conductivity; pH |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| pH accuracy (±) | 0.05 |
| pH measuring range | 0 ; 0 |
| Protection Rating | IP67 |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20M-C
SKU:
oh-30393200
Femto Price: $181.00
×
Starter Pen Meters St20M-C Specifications |
|
|---|---|
| Accuracy | ±2.0 % F.S.; ± 0.05 pH / ± 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Internal Calibration | 3 Point |
| Conductivity Accuracy (±) | 2 % |
| Conductivity measuring range | 0.00 – 19.99 mS/cm |
| Measurement Range | 0.0 – 10.0 ppt; 0.0 – 99.0 °C; 0.00 – 14 pH; 0.00 – 19.99 ms/cm |
| Measurement Resolution | 0.1 °C; 0.1 ppt; 0.01 pH; 0.01ms/cm |
| Meter Type | Conductivity; pH; Salinity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| pH accuracy (±) | 0.05 |
| pH measuring range | 0 ; 0 |
| Protection Rating | IP67 |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20R
SKU:
oh-30073985
Femto Price: $238.00
×
Starter Pen Meters St20R Specifications |
|
|---|---|
| Accuracy | ± 2 mV / ± 0.5 °C |
| Accuracy ± (mV) | 2 mV |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Measurement Range | -1,000 mV ; 1,000 mV |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 1 mV |
| Meter Type | ORP |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 2 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20S
SKU:
oh-30073983
Femto Price: $159.00
×
Starter Pen Meters St20S Specifications |
|
|---|---|
| Accuracy | ± 1.5% / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | 1 Point |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0.0 – 80.0 ppt |
| Measurement Range | 0.0 – 80.0 ppt; 0.0 – 99.0 °C |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 0.1 ppt |
| Meter Type | Salinity |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20T-A
SKU:
oh-30073980
Femto Price: $159.00
×
Starter Pen Meters St20T-A Specifications |
|
|---|---|
| Accuracy | ± 1.5% / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0.0 – 100.0 mg/L |
| Measurement Range | 0.0 – 100.0 mg/L; 0.0 – 99.0 °C |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 0.1 mg/L |
| Meter Type | TDS |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |
Ohaus
St20T-B
SKU:
oh-30073981
Femto Price: $159.00
×
Starter Pen Meters St20T-B Specifications |
|
|---|---|
| Accuracy | ± 1.5% / ± 0.5 °C |
| Accuracy (Temperature) | 0.5 °C |
| ATC | Yes |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Auxiliary Display Model | LCD |
| Battery Life | 200 Hours with Disposable Batteries |
| Internal Calibration | NA |
| Conductivity Accuracy (±) | 1.5 % |
| Conductivity measuring range | 0 – 1000 mg/L |
| Measurement Range | 0.0 – 1000 mg/L; 0.0 – 99.0 °C |
| Measurement Range (Temperature) | 0 °C ; 99 °C |
| Measurement Resolution | 1 mg/L |
| Meter Type | TDS |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| Protection Rating | IP67 |
| Temperature Compensation | Automatic |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing) |
| Wrist Strap | Yes |