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Waterproof Dissolved Oxygen Meter Pen

Name: Waterproof Dissolved Oxygen Meter Pen
Brand: Sper Scientific Direct
SKU: 850045
Price: 371.7 USD
Availability: OutOfStock

Sper Scientific DirectSKU: 850045

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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% O₂	0.1% O₂	±0.7% O₂
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	<5: ±0.3 mg/L≥5: ±0.4 mg/L	±0.3mg/L
DO Resolution (mg/L)	0.1 mg/L	0.1 mg/L	0.1 mg/L	0.01 mg/L	0.1 mg/L	0.01mg/L
DO Accuracy (%)	±0.7% O₂	±2% F.S.	±0.7% O₂	±3% F.S.	±3% of Full Scale	±3%
DO Resolution (%)	0.10%	0.10%	0.10%	0.10%	0.10%	0.10%
Temp. Range	0–50°C / 32–122°F	0–50°C / 32–122°F	0–50°C / 32–122°F	0–50.0°C / 32–122°F	0–40.0°C / 32–104°F	0°–45°C / 32°–113°F
Temp. Accuracy	±0.8°C / 1.5°F	±0.5°C / 0.9°F	±0.8°C / ±1.5°F	±0.5°C / 0.9°F	±0.5°C (0.9°F)	±0.5°C / 0.9°F
Temp. Resolution	0.1°C	0.1°C	0.1°C	0.1°C	0.1°C	0.1°C
Auto Temp. Comp. (ATC)	√	√	√	10–40°C	0–40°C	√
Salinity Resolution				0.1 ppt	0.1 ppt
Barometric Pressure Comp.		Manual (altitude)	Manual (altitude)	500–760 mmHg(66.7–101.3 kPa)	Manual, 50–115 kPa	Manual (altitude)
DO Calibration	1-Point (air)	1-Point (air)	1-Button (air)	1-Point (100% air)	2-Point (0% & 100%)	2-Point (0% & 100%)
Probe Technology	Polarographic DO probe	Polarographic DO probe	Polarographic DO probe	Polarographic DO probe	Optical (fluorescent) DO probe	Optical (fluorescent) DO probe
Sensor Warmup Time	~30 min (cal.)	~30 min (cal.)		<60 seconds	None	~10 min (cal.)
Sensor Response Time				<30 seconds	Fast
Sensor/Probe Lifetime				>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	√	√	√	√