This instrument is designed to be extremely accurate, fast, and simple to use in diverse water quality applications. Advanced features include highly stable microprocessor-based circuitry; automatic temperature compensation from 15ºC to 30ºC while in calibration mode; user-intuitive design; and waterproof housing. A true one-handed instrument, the PT3 is easy to calibrate and easy to use. To take a measurement, you simply push a button then dip the PT3 in solution. Results display in seconds.
HIGH PERFORMANCE FEATURES
- Accuracy of ±10 mV ORP
- Proprietary Sensor Design
- 99.9% Pure Platinum Electrode
- 3 Calibration Options with Automatic Solution Recognition
- Automatic Temperature Compensation in Calibration Mode
- Temperature Readout
- Waterproof
- Powered by One N Type Battery (Included)
PT3 COMES WITH
- PT3 Pocket Tester Pen - Battery Installed
- User Replaceable ORP Sensor - Installed
- Scoop
- Soaker Cap
- Pocket Clip
- Holster
- Lanyard
- ORP Electrode Cleaning Paper • Operating Instructions
PT3 MEASUREMENT MODES
Mode |
Method of Measurement |
Hold (default) |
Once stabilized, the readings are captured then displayed. |
LIVE |
Real-time readings are displayed continuously during measurement. |
SPECIFICATIONS
ORP Range: |
-1000mV to +1000mV |
ORP Accuracy: |
± 10mV |
ORP Resolution: |
1mV ORP |
Temperature Range: |
0 - 71°C / 32 - 160°F |
Temperature Accuracy: |
± 0.1oC / ± 0.1oF |
Temperature Resolution: |
0.1oC / 0.1oF |
Time to Reading Stabilization: |
10 - 45 seconds |
Power Consumption: |
Active Mode 30-100mA Sleep Mode 2μA |
Temperature Compensation: |
Automatic In Calibration Mode From 15oC to 30oC |
Physical Dimensions: |
17.15cm L x 1.59cm D or 6.75in. L x 0.625in. D |
Weight: |
50.4g / 1.78oz. (without soaker cap and lanyard) |
Case Material: |
Anodized Aircraft Aluminum with Protective Coating |
Battery Type: |
One N type, Alkaline, 1.5V |
Calibration Standard Solutions: |
ORP80, ORP260, ORP470 |
Operating/Storage Temperature: |
0 - 55oC / 32 - 131oF |
AL Enclosure Ratings: |
IP67 and NEMA6 |
Œ
mm EN61236-1: 2006 – Annex A: 2008: |
Electrostatic discharge to the PT3 may cause it to spontaneously turn on. If this occurs, the PT3 will turn off. |
Standard Solutions For Calibration:
The ULTRAPEN™ PT3 requires 80mV Quinhydrone, 260mV Quinhydrone, or 470mV MLC Light’s ORP Standard Solutions for wet calibration and Sensor Storage Solution for proper storage.

Click to order Standard Solutions and Buffers
ORP ELECTRODE CLEANING PAPER:
Routinely cleaning the platinum electrode will keep the sensor free of build-up that can affect the speed and accuracy of FCE free chlorine measurements. Instructions for use are included with the paper.
REPLACEMENT ORP SENSOR
The ULTRAPENT™ PT3 features a use-replaceable ORP sensor with a unique porous liquid-junction. Installation instructions included with sensor.
Warranty
The PT3, excluding the ORP sensor, has a one (1) year limited warranty. The ORP sensor has a six (6) month limited warranty.
Includes battery installed, protective/hydration cap, scoop, pocket clip, holster, lanyard, ORP electrode cleaning paper, quick start guide
Click for Operation Manuals / Instructions
Myron L® Ultrapen™ Series units have probes that can freeze and break and must ship 2nd Day Air with a heat pack.
Ignoring this requirement voids the warranty.
- Models: PT3, PTBT3, BATT11768, BATT11768-B3, RPT3, PTSC, OECP-25 & OECP-100