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  • Hanna Instruments HI 98128W pH and Temperature Tester with Solutions for Wine
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Hanna Instruments HI 98128W pH and Temperature Tester with Solutions for Wine


Price: $99.00 & FREE Shipping. Details
Only 16 left in stock (more on the way).
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Specifications for this item
Brand Name Hanna Instruments
Part Number HI 98128W
Number of Items 1
Item Weight 1 pounds
Measurement Type pH , Temperature
UNSPSC Code 41000000

The Hanna Instruments HI 98128W is a hand-held pH and temperature meter wi... Read full product description



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Product Features

  • Automatic calibration with two sets of memorized buffer values for ease of use
  • Replaceable electrode to prolong the life of the meter
  • Automatic temperature compensation (ATC) eliminates need for extra calculations
  • Stability indicator to prevent false readings
  • Provides pH readings from -2.00 to 16.00 pH (+ or - 0.1), with a resolution of 0.01 pH

Product Details

User Manual [502kb PDF]
  • Item Weight: 1 pounds
  • Shipping Weight: 1.2 pounds (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
  • ASIN: B003IKNJIE
  • Average Customer Review: 3.4 out of 5 stars  See all reviews (14 customer reviews)
  • Amazon Best Sellers Rank: #72,029 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Frequently Bought Together

Hanna Instruments HI 98128W pH and Temperature Tester with Solutions for Wine + Hanna Instruments HI 70300M Storage Solution for pH/ORP Electrodes, 230mL Bottle + General Hydroponics Ph 4.01 & Ph 7.0 Calibration Solution Kit - 8 Ounces
Price for all three: $126.16

These items are shipped from and sold by different sellers.

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Product Description

The Hanna Instruments HI 98128W is a hand-held pH and temperature meter with automatic calibration, a replaceable electrode, automatic temperature compensation, a stability indicator, and an LCD screen. The meter provides readings from -2.00 to 16.00 pH (+ or - 0.1), with a resolution of 0.01 pH. It is designed for wine and beverage making, but can be used for other applications.

The HI 98128W meter features automatic calibration with two sets of memorized buffers (pH 4.01/7.01/10.01 or pH 4.01/6.86/9.18), and automatic temperature compensation (ATC) for ease of use. An internal stability feature indicates when to take a reading, and a hold function allows the user to freeze the display to record results. The meter floats if dropped in liquid, and features a replaceable HI 73127 pH electrode to prolong the life of the meter. Four 1.5V batteries are included, and provide approximately 3,000 hours of continuous use.

The HI 98128W tester measures temperatures of -5 to 60 degrees C (23 to 140 degrees F), + or - 0.5 degrees C (+ or - 1 degree F) with maximum relative humidity (RH) of 100% with resolution 0.1 degrees C (0.1 degrees F), and has a range of -2.00 to 16.00 pH (+ or - 0.1) and resolution of 0.01 pH. Operating temperature range is -5 to 50 degrees C (23 to 122 degrees F). The meter measures 63 x 40 x 26 mm/6.4 x 1.6 x 1.0 inches (H x W x D) and weighs 100 g (3.5 oz.). (H is the vertical distance from lowest to highest point; W is the horizontal distance from left to right; D is the horizontal distance from front to back.)

pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

What’s in the Box?

  • HI 98128W meter
  • HI 73127 pH electrode
  • Electrode removal tool
  • Four 1.5V batteries
  • Instructions

Customer Questions & Answers

Customer Reviews

3.4 out of 5 stars
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Most Helpful Customer Reviews

19 of 19 people found the following review helpful By B. Tarbuck on May 29, 2010
Verified Purchase
We have really low pH in our house. It's around 6.5 which is low enough to help eat the copper pipe and stain the fixtures blue.

So we installed a system that injects soda ash into the well water thereby increasing the pH to something higher that will allow our poor copper pipes to survive a while longer.

That's all fine and dandy to do, but you need a way to test the pH.

I found this online and pulled the proverbial trigger. I work at a water / wastewater utility and we don't really use too many Hanna field instruments but we have a bunch of pH analyzers of different stripes. Unfortunately, people would notice if I unbolted a process analyzer from the wall and installed it in my basement.

One of our lab people had some pH 4, 7 and 10 calibration solution made up. I bought a bunch of the required 357 batteries and turned on the Hanna. Ok so, I tried to turn it on. The power button on the left took a great deal of force to activate as if the button had sunken into the unit. Once on however, I calibrated it using a 2 point calibration and resampled the stock calibration solutions. It was close enough for field work.

Annoyances: power button seems sketchy for a new device; little teeny batteries at the top of the unit require a little teeny screwdriver to get to; little teeny screws likely to get dropped / lost; requires 357 button batteries which are not common; would likely be hard to use in the field unless you had the foresight to bring more batteries and the appropriate screwdriver to field replace the batteries

Pluses: calibrated quickly and appears to be accurate enough to use for field reports; have not had the folks at our lab test it against bench or process analyzers to see how it fares against higher priced equipment

Summary: get a tiny screwdriver, tiny batteries, hope the buttons don't fail, cheap and easy way to field measure pH with a decent accuracy / repeatability
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4 of 4 people found the following review helpful By Sitting in Seattle on November 16, 2011
Verified Purchase
Based on reviews of both this and other pH units, these devices appear to be erratic and short-lived. But my experience with the Hanna 98128 has been good so far.

Specifically, my readings have been consistent and reliable (typically within 0.05 pH across a few minutes with same or different samples from wine must). They have agreed with both my own guesses as to pH, and with readings from a friend who makes wine from the same grapes and uses a Milwaukee pH unit.

One thing I have noticed is that "drift" in the readings can be minimized by two things: (1) calibrating with 4.01 solution before reading, and (2) stirring the sample constantly.

The kit comes with a couple of pouches of calibration fluid, which is enough to get up and running for the first trial. After that you will want to purchase at least the storage solutionpH Electrode Storage Solution - 230 ml, 7.01 calibration Hanna pH 7.01 Buffer Calibration Solution 500ml, and 4.01 calibration solutions Hanna pH 4.01 Buffer Calibration Solution 500ml. Be sure always to rinse the sensors after use, and store with the cap + storage solution.

As for durability across harvests, I can't say. I expect a product like this realistically to last 3-5 years with moderate usage (a few times a week during harvest, crush, and early wine making). If it fails before then, I will try to update this review. Cheers!
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3 of 3 people found the following review helpful By ibglowin on October 18, 2013
Verified Purchase
Purchased 3 years ago this month (October 2010). I have used this little guy every month as a home winemaker checking pH levels as well as making TA measurements. I am still on the same set of batteries and they are now at 99% charge. Amazing. I always rinse well with lots of H2O after using them and I always calibrate with buffer solution before making measurements. Some people have had problems and others like me must have gotten a good one. No problems dunking the meter into solutions but I have not dropped it in completely. Seems pretty tight and sealed well. The buttons are holding up and it is simple and straightforward to calibrate. Just went through the crush of 2013 and used it almost daily for several weeks its seemed. Again it worked flawlessly. Over all very happy with my purchase.
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5 of 6 people found the following review helpful By Rat8bug on September 12, 2009
Verified Purchase
After reading reviews on many PH meters, I settled on this one. Well, for the price, I suppose its OK. I got this meter to check the status of my personal PH levels as I change my diet to 70/30 alkaline/acidic mix. This meter was calibrated right out of the box, but I did confirm it with the calibration kit. What I was disturbed about was the weak LCD display, and the controls required excessive effort to negotiate. On the latter point, I suppose this was done to make the item waterproof. If this were an everyday use item, I would probably rate this item even lower.
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3 of 3 people found the following review helpful By E. Cekis on January 21, 2011
I've had this long enough to need new batteries. Nothing in the manual to tell which ones. Saw the review that complained about the 357 and said AHA. Replaced batteries with 357 and LR44s. 4 screws, 4 batteries, 300 hrs of use. No big deal. I have dropped it into the water with no harm done.
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3 of 3 people found the following review helpful By Dnhill on October 1, 2010
Verified Purchase
I've been using this model pH meter for water quality checks in a water distribution system for years with few problems other than periodic electrode replacement. It is handy, rugged and dependable.
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