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Extech EC500 Waterproof ExStik II pH/Conductivity Meter

by Extech
4.2 out of 5 stars 91 customer reviews

List Price: $159.99
Price: $136.34 & FREE Shipping. Details
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Only 18 left in stock (more on the way).
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pH | Conductivity | TDS
  • Enter your model number above to make sure this fits.
  • Combination flat surface pH electrode with autoranging high accuracy conductivity cell
  • Measures 5 parameters including conductivity, TDS, salinity, pH, and temperature using one electrode
  • 9 units of measure: pH, µS/cm, mS/cm, ppm, ppt, mg/L, g/L, Celsius, Fahrenheit
  • Analog bargraph indicates trends
  • Memory stores up to 25 labeled readings
See more product details
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$136.34 & FREE Shipping. Details Only 18 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Extech EC500 Waterproof ExStik II pH/Conductivity Meter
  • +
  • Extech EC505 ExStik Replacement pH Electrode/Conductivity Cell Module For Extech EC500
  • +
  • Innovating Science Buffer Calibration Kit
Total price: $211.78
Buy the selected items together

Special Offers and Product Promotions

Style: pH | Conductivity | TDS
  • Save Big On Open-Box & Used Products: Buy "Extech EC500 Waterproof ExStik II pH/Conductivity ...” from Amazon Open-Box & Used and save 65% off the $159.99 list price. Product is eligible for Amazon's 30-day returns policy and Prime or FREE Shipping. See all offers from Amazon Open-Box & Used.
  • Working on a home project? Need some help? Check out Amazon Home Services and get a $20 Amazon Gift Card when you book your first service. Learn more


Technical Details

Style: pH | Conductivity | TDS
  • Portable

Product Description

Style: pH | Conductivity | TDS

Product Description

ExStik II pH/Conductivity/TDS/Salinity Meter

The Extech EC500 ExStik features seven units of measure (pH, µS/cm, mS/cm, ppm, ppt, mg/L, g/L), internal memory that stores up to 15 labeled readings for easy recall, adjustable conductivity to TDS ratio factor from 0.4 to 1.0, and self-calibration upon power up.

Accurate Sensor Measures Four Parameters

The EC500 incorporates the latest microprocessor chip technology and patented sensor technology to enable the simultaneous measurement of conductivity, TDS, salinity, and temperature. With the touch of a button the EC500 allows you the flexibility of interchangeable cell constants and has made the job of testing fast, accurate, and repeatable.

Applications

  • Wastewater and drinking water analysis
  • Environmental tests to determine the health of ponds, streams, wells, and other bodies of water
  • Manufacturing processes such as component or PCB rinsing

Related Products

EC510
ExStik II pH/Conductivity/TDS/Salinity/Temperature Kit

Kit includes the EC500 ExStik pH/Conductivity/TDS/ Salinity/Temperature Meter, with EC505 sensor, protective cap, 84μS/cm, 1413μS/cm and 12880μS/cm Conductivity calibration standards (30mL bottle each), pH buffer pouches (one each of 4, 7, 10 pH plus rinse solution), weighted base, three sample cups with caps, four 3V CR-2032 batteries, 48" (1.2m) neckstrap, and carrying case.

From the Manufacturer

Innovative design with flat surface technology for quick on-the-spot pH measurements combined with autoranging high accuracy Conductivity cell. Measures 5 parameters including Conductivity, TDS, Salinity, pH, and Temperature using one electrode. Includes electrode, protective sensor cap, sample cup with cap, four 3V CR-2032 batteries, and 48-Inch (1.2m) neck strap.

Product Information

Style:pH | Conductivity | TDS

Technical Details

Part Number EC500
Item Weight 3.8 ounces
Product Dimensions 9.2 x 3.9 x 2.1 inches
Item model number EC500
Batteries 4 Lithium Metal batteries required. (included)
Style pH | Conductivity | TDS
Item Package Quantity 1
Special Features Portable
Batteries Included? Yes
Batteries Required? Yes
Warranty Description 1 year

Additional Information

ASIN B000NI4AUA
Customer Reviews
4.2 out of 5 stars 91 customer reviews

4.2 out of 5 stars
Best Sellers Rank #75,422 in Home Improvements (See top 100)
#23 in Industrial & Scientific > Lab & Scientific Products > Lab Instruments & Equipment > Meters > Multiparameter Meters
#24 in Industrial & Scientific > Test, Measure & Inspect > Water Quality & Instrumentation > Conductivity Meters & Accessories
#53 in Home & Kitchen > Kitchen & Dining > Home Brewing & Wine Making > Measuring & Testing > pH Meters
Shipping Weight 7 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available February 14, 2007

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Reviews

Top Customer Reviews

Style Name: Fluoride Verified Purchase
I have been testing water from tap, reverse osmosis, big berkey, and now custom water filters I am building. And wow this shows how much PPM of fluoride is in the water as well as water temp. This in combination with my TDS PPM gauge tells me a lot about the water quality.

What I found was Reverse Osmosis took tap water from 1.7 ppm to .3 fluoride, Big Berkey went from 1.7 to .3 fluoride, and with my friends refrigerator filter in combo with the Reverse Osmosis got fluoride to 0.0!!

This is a great way to test fluoride without spending $200 a pop on scientific tests.
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Style Name: pH
I have been using this instrument for 4 years and found that for the most part it works okay, however at times it has been known to suddenly stop working (it doesn't give a reading above 1 and/or has a strange flashing symbol in place of a number) for no apparent reason. In 4 years I've sent 2 units back to the manufacturer who sent replacements, but did not explain what was wrong or how to avoid future problems. I take good care of the instrument - cleaning, calibrating and storing correctly. The unit stopped working again a couple of weeks ago and I have to assume it needs a new electrode, even though there was no 'RENEW' signal (I've never actually seen the symbol the whole time I've used the meter). I do find I'm left guessing about what to do to make the meter work again if it packs up! Something else that bothers the heck out of me is that the electrode needs to be replaced fairly often (every 6 months - using it on average 2 to 4 times per week) - and $39+ each time hurts (and forget the refillable model too - never worked again after it needed refilling).
Comment 29 of 30 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: pH Verified Purchase
The ExStik pH100 does not work. If I had the time, I'd make a video review to go along with these words. Even after calibration, using ExTech's own solutions, the pH100 fails to read pH levels anywhere near-accurate. It randomly reports its 'findings', even when using the same sample being tested. The fault may be with the included pH electrode (and sealed solution), which you have no way of knowing the condition or age of, because it's not packaged separately or appropriately for sensitive electronics. For the cost of this item, you'd expect some level of quality. Look elsewhere, because this product will disappoint both you and your wallet. But, if you still want to buy this piece of junk, I'll mail you mine for just the cost of shipping. You'll still be getting ripped off, but you won't feel so bad as purchasing at full price.
1 Comment 32 of 34 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Fluoride Verified Purchase
This tester works perfectly and is identical to other instruments costing $100 more. It comes with reagent tabs, but eventually you will have to purchase more tabs. Owning a tester allows you to monitor the viability of your fluoride filter and to make educated choices regarding various bottled drinks and your municipal water supply. Bone char or high quality reverse osmosis are the best filter options, but eventually the bone char gets saturated and the membrane breaks down in the reverse osmosis filter, so it pays to test every few months. If you are reading this, you understand that fluoride is a toxin, not a nutrient. Highly recommended.
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Style Name: Fluoride Verified Purchase
I've tested various brands of bottled water with this as well as my city's tap water and it seems to function properly. For instance, it gives a reading of 0.0 ppm for Glaceau's Smart Water brand, which is distilled water. My city's water report gives a measurement of 0.73 ppm of fluoride for the local tap water, and I got a reading of 0.7 ppm with this product while measuring the tap water, so that checked out. I've also tested water purified via reverse osmosis and this meter consistently gave a reading of 0.0 to 0.1 ppm.

It's important to recalibrate the meter often though, as well as adding TISAB solution to the water that you're assessing for accurate results.
1 Comment 17 of 17 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: pH
The unit is accurate and works as advertised. Minor detail they DON'T mention. You really want to calibrate it for the most accurate readings. To do this you need PH 4 and PH 7 solutions which are NOT included. Luckily I have a friend in the chem business so I got some free. Otherwise you are stuck having to buy a bottle of each. The unit does work out of the box, comes with batteries (little watch style, so will be $$ to replace down the road, but hey the do give you batteries to start with) and does a decent job even without calibration.
Comment 26 of 28 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: Fluoride Verified Purchase
Excited at first and then let down...

Nowhere does it tell you on Amazon.com or at the MFG's website that you also are required to purchase 1ppm fluoride solution in order to calibrate it. The TISAB tablets do NOT calibrate the meter. The 1ppm fluoride solution runs ~$60.00 for a 500ml bottle. So all together I would have ended up spending $203.25 for the meter PLUS $60.00 to calibrate it for a total of ~$270.00. I have prime so I didnt have to pay for shipping but had I not had prime, i guess i would have been another $10-$15.00 for shipping?

btw, the meter comes with ~ 20 TISAB tablets so you probably do not need to purchase anymore tablets unless you plan on testing a ton of water with it. I purchased the tablets @ $27.00 because I was unaware that some tablets came with the tester.

I guess I am not really willing to pay $270.00 to "verify" how good my RO system works.
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Extech EC500 Waterproof ExStik II pH/Conductivity Meter
This item: Extech EC500 Waterproof ExStik II pH/Conductivity Meter
Price: $136.34
Ships from and sold by Amazon.com

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