Waterproof Dissolved Oxygen Meter Pen
ID: #586639
Description
Measures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal wastewater, aquariums and fish hatcheries. Designed for simple one-hand operation with automatic temperature compensation and calibration to air. The polarographic probe has a built in temperature sensor and easy-to-replace pop-off probe heads. Simultaneously displays dissolved oxygen and temperature readings. Also holds readings and recalls minimum and maximum. IP65 waterproof. Comes ready to use in a soft carrying case with belt loop, two spare probe heads, electrolyte and 4 AAA batteries. EPA Equivalency Method: 360.1 Dimensions: 7¾" × 1½" × 1½" (197 × 38 × 38 mm) Weight: 4.1 oz (116 g) Specifications Unit of Measure: Range: Resolution: Accuracy: DO: 0 to 20.0 mg/L 0.1 mg/L ±0.4 mg/L Oxygen % in Air: 0 to 100% O 2 0.1% O 2 ±0.7% O 2 Temperature ºF: 32 to 122ºF 0.1ºF ±1.5ºF Temperature ºC: 0 to 50ºC 0.1ºC ±0.8ºC Downloads Instruction Manual Product Brochure Comparison Chart Compare Sper Scientific Dissolved Oxygen (DO) Meters Model Number 850045 850048DOK 850081DOK 860055 860067 860073 Product Name Waterproof DO Meter Pen Combination Water Meter Kit w/ DO Probe Dissolved Oxygen Meter Kit Rechargeable DO Pen w/ 5 Meter Cable Optical Dissolved Oxygen Meter Portable Optical Dissolved Oxygen Meter DO Range (% Saturation) 0–100% O₂ in air 0–200% 0–100.0% 0.0–199.9% 0.0–200.0% 0-200% DO Range (mg/L) 0–20.0 mg/L 0–20.0 mg/L 0–20 mg/L 0.00–20.00 mg/L 0.0–20.0 mg/L 0 -20 mg/L DO Accuracy (mg/L) ±0.4 mg/L ±0.4 mg/L ±0.4 mg/L ±0.4 mg/L 6 months >1 year >1 year Measures pH (optional probe) (optional probe) Measures ORP / mV (optional probe) Measures Conductivity/TDS (optional probe) (optional probe) Measures Salinity Via compensation (optional probe) (optional probe) Via compensation Via compensation Via compensation Memory / Data Storage Max/Min record 99 memory points 99 memory points +100,000 memory points RS232 / Data Output RS232 USB Display Type Dual LCD Large backlit LCD Backlit LCD Backlit LCD Large LCD Large LCD Simultaneous DO & Temp. √ √ √ √ √ √ Backlight √ √ √ √ Battery Type (4) AAA (4) AAA 9V 3.7V 500mAh Rechargeable Li-ion (6) AAA Rechargeable Li-ion Charging USB Type-C(~1.5 hr) USB IP Rating IP-67 IP-67 IP-67 Housing / IP-68 Sensor Spare Probe Heads 2 spare probe heads 2 spare probe heads 2 spare probe heads 2 spare probe heads Electrolyte Solution √ √ √ √ Videos
Price
$354.00
Last Updated
9 August 2026, 16:39 UTC
Store Information
physical store
Location
More from Tech Instrumentation
View all
9351 Pan and Vessel Clamp (Package of 10)
$1.21
Pan/Vessel Clip Cooper-Atkins Model 9351 Stainless Steel Pan/Vessel Clamp 37-2D for 1/8" Diameter Stem Thermometer. Sold in packages of 10 clips. Dimensions 1/8" diameter bi-metals Material Stainless Steel
480836 EMF Strength Meter - 3.5GHZ RF
$253.16
480386 High Frequency measurement for EMF (50MHz to 3.5GHz) The Extech 480386 RF EMF Strength Meter monitors high-frequency radiation in the 50MHz to 3.5GHz range. It's ideal for mobile phones, cell phones, base stations, locating RF hotspots, wireless network (Wi-Fi) RF detection, RF "Electrosmog" detection, and microwave leakage. This high-frequency RF meter features non-directional measurement with 3-channel (triaxial) measurement probe, Max Hold and Average functions, and manual store/recall of up to 99 data sets. In addition, there is an audible alarm with a user-selectable threshold. The meter comes complete with a 9V battery and carrying case. Features Ideal for EMF measurements of mobile/cell phones, base stations and microwave leakage Measurement optimized for 900MHz, 1800MHz and 2.7GHz Non-directional (isotropic) measurement with three-channel (triaxial) measurement probe Max Hold and Average functions Manual store/recall up to 99 sets Level exceed audible alarm with user selectable threshold Complete with 9V battery and carrying case Specifications Specifications Range Sensor Type Electric Field Frequency Range 50MHz to 3.5GHz (Measurement optimized for 900MHz, 1800MHz and 2.7GHz) Units of Measure mV/m, V/m, μA/m, mA/m, μW/m 2 , mW/m 2 , W/m 2 , μW/cm 2 , mW/cm 2 Measuring Ranges 20mV/m to 108.0V/m 53μA/m to 286.4mA/m 1μW/m 2 to 30.93W/m 2 0μW/cm 2 to 3.093mW/cm 2 Resolution 0.1mVm, 0.1mA/m, 0.1mW/m 2 , 0.001mW/cm 2 Audible Alarm Adjustable threshold with On/Off Memory Manual store/recall of 99 sets Dimensions 9.3 x 2.4 x 2.4" (237 x 60 x 60mm) Weight 7oz (200g) UPC: 707223185377 EAN: 5053252182180
445703 Extech Big Digit Hygro-Thermometer
$46.85
445703 1" Digits on super large LCD This Big Digit Hygro-Thermometer has 1 in. digits on a super large LCD. It simultaneously displays humidity from 10 to 99% and temperature from 14 to 140°F or -10 to 60°C. Accuracy is ±5%RH and ±1.8°F/±1°C. Maximum/minimum with reset function. Complete with stand, wall mounting bracket and 1 AAA battery. Features Max/Min with "reset" function Humidity: 10 to 99%RH Temp: 14 to 140°F or -10 to 60°C Accuracy: ±5%RH; ±1.8°F, ±1°C Specifications Specifications Range Humidity range 10 to 99%RH Basic RH accuracy ± 5% (25 to 80%) Temperature range 14 to 140°F (-10 to 60°C) Basic Temperature Accuracy +/-1.8F/1°C (14 to 122°F) Dimensions 4.3 x 3.9 x 0.78"(109 x 99 x 20mm) Weight 6oz (169g)
TL360W/TL100 Alligator Clip Test Leads
$5.60
TL360W All Weather Test Leads Flexible soft leads Ideal for cold months Medium alligator clips Insulated boots Specifications: TL360W Volts: 300V Amps: 10 18 Gauge Wire Length: 36" Weight: 0.26 lb.
ST400 Economy Screwdriver Tester
$0.49
Discover the compact ST400 Economy Screwdriver Tester that doubles as a pocket screwdriver with built-in voltage detection. This versatile tool clips conveniently to your shirt pocket while providing reliable AC voltage testing from 90-250V. Essential for electricians and DIY enthusiasts who need quick voltage verification without bulky equipment. Includes battery for immediate use.
CT220-51 Bimetal Pocket Thermometers
$86.13
12-Pack of Bimetal Pocket Thermometers 1" dial 5" stem with calibration sheath. 12 units packed in self merchandising display box. Temperature Range 0 ° to 220 °F Temperature Accuracy ±2 °F Housing Material Stainless Steel Dial Diameter 1" / 2.54cm Shaft Length 5" / 12.7cm Weight 0.7oz / 19.8g