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Your cart is empty.The ExStik® II DO600 meter displays Oxygen level as percent of Saturation from 0 to 200. 0 percent or Concentration from 0 to 20.00 ppm (mg/L). It features Adjustable Altitude Compensation (0 to 20,000 feet in 1,000 ft. increments), Adjustable Salinity Compensation from 0 to 50 ppt and an analog bargraph for indicating trends. DO600 meter includes a DO electrode, protective sensor cap, spare membrane cap, electrolyte, four 3V CR-2032 batteries, and 48" (1.2m) neck strap.
Kindle Customer
2025-08-30 18:06:51
It is nice to not have to deal with a meter box to lug around. I use this for measuring water quality of fish tank/aquaponics parameters. This handheld gives the temperature rapidly. The dissolved oxygen reading takes about 20 to 30 seconds to stabilize. The calibration and adjustability makes this a very convenient tool to have in one's pocket or hanging from the neck.
ASIA A.
2025-08-06 14:09:25
The media could not be loaded.
HydroJo
2025-07-30 10:26:47
Great kit and it works just fine. Took it out for a week to monitor various DO levels in streams. Had no issues and it was really accurate for the work we were doing. One thing users need to realize is that it needs to be calibrated each week or sooner at a minimum (manual states so). If you plan to be away from the office or in a remote area for some time, bring most of the kit with you so you can recalibrate it several times. Otherwise your samples are likely to be inaccurate.
GARRIGA
2025-06-16 15:13:26
Using it to monitor aquarium O2 levels day and night at different depths to ensure stocking density doesn't cause depletion levels. Very accurate based on calibration.Had an issue understanding the calibration process at first and technical support was easy to access and walked me through the process. I appreciate that. Might buy other products from them.
Floridan
2025-06-07 15:40:58
The second time we attempted to use the Extech "waterproof" DO Meter we found it totally dead. When we removed the cap, the entire inside of the meter was wet with water an battery acids. Either outside water had entered the meter from somewhere or the fluid around the probe found its way inside the meter. Either way this was not only a useless purchase but it's failure has possible compromised a study. Extech will not be on anybody's shopping list around here any time soon!
Iván Guerrero
2025-05-05 10:16:15
Excelente producto
JamesP
2025-03-01 11:02:44
DO meter came in late and wouldn't turn on past the self startup. Basically sat stuck there forever and looks like some others had the same issue. I have issued a return and will try another to see if it was just a bad device and update my review accordingly. The instructions are really bad and honestly seems overly complicated to get it setup.
JG
2025-02-08 12:33:39
Purchased in October 2016. Easy to use. In addition to disolved oxygen displays temp. However very slow working. In January 2017 stopped working all together. It goes through self calibration then displays 00.00 for both DO and T. When was operational it was OK.
Mike Newhook
2025-02-06 12:18:11
Great product and great support
Torsten Bruns
2025-01-29 11:11:11
Für den Preis darf man sicherlich nicht viel erwarten, aber zumindest eine verständlich Bedienungsanleitung wäre cool gewesen.
Andrey Revyakin aka Dr Dodgy
2024-12-22 12:14:58
My use for the unit is somewhat unconventional, as I use it to measure O2 content in very small volumes -- 250 microliters or so. I use this to measure oxygen decay carried out by an oxygen scavenging enzyme. Given that this instrument costs 10x less than a dedicated 'scientific grade' one, I am quite happy with it. I mount the probe upside down, and deposit 250 ul into the 'cup', which gives me a bit of a meniscus. I control the temperature of the probe by wrapping a kapton resistive heater around the tip, and attaching a small thermistor to it.The response time of the unit is about 30 sec. Upon adding a freshly prepared oxygen-scavenging enzyme solutoin to the tip (now used as a 'cup'), the measurements drop from about 7.0 mg/L to about 0.2 mg/L in 2-3 minutes, which seems the lowest the instrument can estimate. If one immediately seals the tip with an oxygen-inpermeable film, the readings stay at 0.1-0.2 mg/L for at least 2 hrs. Once one removes the seal, the readings go back to 5-7 in 5-10 min, consistent with the diffusion rate of oxygen. My measruements are probably slower, b.c. the volume inside the probe is comparable to the volume in the cup.My only complaint is that the built-in temperature probe is mounted far away from the tip, and does not reflect the temperature of the tip. So, when I measure the temperature of the tip at 42C, the built-in probe shows 28C or so. So one needs to use a separate probe if one after small volumes like I am.
Mr. Dc Gladwell
2024-12-07 18:24:02
Ideal for Rivers Trust Organisations to find out what are the oxygen levels in slow overgrown watercourses resulting fromm poor EA maintenance and abrogation of statutory duty.. In Durable case
None YourB
2024-11-30 20:10:34
read anything... badly! lol You can add 1, 2 or 3 air pump in the same bucket, always the same reading. You take a measurement of tap water, back to the original and have a different reading...I guess the more accurate one worth it even if they are costly.
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