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  • Hanna Instruments HI 99121N Direct Soil and Water Portable pH/Temperature Meter
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Hanna Instruments HI 99121N Direct Soil and Water Portable pH/Temperature Meter

3 customer reviews

List Price: $410.97
Price: $390.00 + $6.49 shipping
You Save: $20.97 (5%)
Only 8 left in stock.
Ships from and sold by One Way Out Sales.
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Specifications for this item
Brand Name Hanna Instruments
Part Number HI 99121N
Number of Items 1
EAN 0094703204490
Measurement Type pH , Temperature
Size With Two Sets of Memorized Buffers
UNSPSC Code 42181904
UPC 094703204490

The HI 99121N is a portable, waterproof pH and temperature meter that comes with the HI 1292D ... Read full product description



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Product Features

  • Portable, waterproof pH and temperature meter for soil and water
  • Automatic one- or two-point calibration for ease of use
  • Automatic temperature compensation (ATC) to reduce additional calculations
  • Battery error protection system (BEPS) to help prevent inaccurate readings
  • Hold function to freeze display and record results

Product Details

User Manual [182kb PDF]
  • Shipping Weight: 3.2 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: B003UNK3LU
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (3 customer reviews)
  • Amazon Best Sellers Rank: #96,700 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Product Warranty: For warranty information about this product, please click here

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Frequently Bought Together

Hanna Instruments HI 99121N Direct Soil and Water Portable pH/Temperature Meter + Hanna Instruments HI 70300M Storage Solution for pH/ORP Electrodes, 230mL Bottle + Hanna Instruments HI 7061M Electrode Cleaning Solution, 230mL Bottle
Price for all three: $416.79

These items are shipped from and sold by different sellers.

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Product Description

The HI 99121N is a portable, waterproof pH and temperature meter that comes with the HI 1292D pH electrode for measuring diluted soil samples or soil directly, and features a large LCD screen, automatic temperature compensation (ATC), a hold function to freeze and record results, and a battery error protection system (BEPS) to reduce inaccurate readings. The meter comes with the HI 1292D electrode, which has a sturdy conical tip that can be directly inserted in soft soil, and the HI 721319 plastic soil auger for perforating harder soil.

The meter features on-screen tutorial messages to assist with calibration, which is automatic at one or two points. The HI 99121N comes with (3) AAA 1.5 V batteries that provide approximately 1200 hours of continuous use (an auto off function shuts the meter off after 8 minutes of non-use). A 100 mL beaker and starter buffer, cleaning and soil preparation sachets are included.

pH range is -2.00 to 16.00 (+ or - 0.02pH) with a resolution of 0.01 pH. Temperature range is - 5.0 to 105.0 degrees C (23.0 to 221.0 degrees F) + or - 0.5 degrees C (up to 60 degrees C), + or - 1 degree C (outside); + or - 1.0 degree F (up to 140 degrees F), + or - 2 degrees F (outside), with a resolution of 0.1 degrees C or F. Dimensions are 152 x 58 x 30 mm (6.0 x 2.3 x 1.2”), with weight 205g (7.2 oz.).

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

Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries located in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including the world’s first pH electrode with a built in temperature sensor, electronic pocket-sized pH tester, and replaceable electrode pH pocket tester. To assure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.

What’s in the Box?

  • Meter
  • HI 1292D pH/temperature electrode
  • HI 721319 soil auger
  • HI 7051M soil preparation solution
  • HI 70004 pH 4.01 and HI 70007 pH 7.01 buffer solution sachets
  • HI 700663 cleaning solution sachet for inorganic soil deposits
  • HI 700664 cleaning solution sachet for organic soil deposits
  • 100 mL plastic beaker
  • (3) 1.5V AAA batteries
  • Instructions
  • Hard carrying case

Customer Questions & Answers

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Most Helpful Customer Reviews

20 of 20 people found the following review helpful By Growerman on May 4, 2011
I purchased one these HI 99121 meters a few years ago and I don't know how I survived without it! I mean you literally just stick the probe in the soil and you get a instant pH reading. I used to never check my soil pH simply because it was too time consuming, but now I check my soil every week. And its fun to use. Worth every penny! It is also very accurate. I compared it with university tests for the same soil and it was the same. I just had to share this with someone.

Enjoy!
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1 of 1 people found the following review helpful By StevieQ on July 1, 2015
I bought this Hanna direct read soil pH meter because I needed a very accurate pH meter and I was tired of using one too many of those so-called "soil pH meters" on the market that have metal electrodes, such as Rapitest, or Kelway, etc. I have no idea what is the physical theory behind those cheap metal electrode pH meters you get at garden centers, but I can tell you that they DON'T WORK. If you are contemplating buying one of these cheap metal electrode pH meters, don't! They are not accurate and they don't work to within any acceptable or useful degree of accuracy, except perhaps by luck. I even have an expensive Kelway HB-2 metal electrode pH meter. It's a $120 piece of junk PRETENDING to be an accurate pH meter as far as I am concerned. The Kelway HB-2 CLAIMS (with heavy emphasis) an accuracy of +- 0.2 pH. After checking against the Hanna HI99121N meter, I think the Kelway's an accuracy is +- 2 (just 2, no decimals) is more like it. You be the judge whether a meter with +- 2 accuracy gives you meaningful pH reading.

There are no good cheap shortcuts when it comes to getting good pH measurements. You just need to spend the money to get a good and real pH meter or you can send soil samples to a lab. You can use hard to read litmus pH paper, or litmus drops, I suppose.

Besides the Hanna HI99121N, here are a few other glass electrode direct reading soil pH meters I have found:

Extech PH100 ExStik ($75, available on Amazon),
Spectrum FieldScout Soilstik pH meter (about $160, looks almost same as ExStik, but at twice the price),
Bluelab soil pH pen (about $130)
Oakton WD-35634-40 Double Junction pH Spear ($250).
Read more ›
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1 of 1 people found the following review helpful By matthew Burgholzer on December 13, 2014
Verified Purchase
Works good - no problems
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Want to discover more products? Check out these pages to see more: hanna water ph tester, hanna instrument portable meters