Hanna Instruments

Hanna Instruments Checker Plus pH Tester

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HN98100

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Hanna Instruments Checker Plus pH Tester HI98100

The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million meters used since its introduction in 1991. From students to researchers, the Checker has been helping people with their pH measurement as a meter that is simple to use and operate. A replaceable electrode extends the life of your digital pH tester.

  •     ±0.2 pH accuracy 
  •     Comes with all the necessary solutions and batteries- everything you need to get started measuring right away.
  •     Great for environmental, field, and laboratory testing.

The main difference between the HI98100 and HI98103 is the Checker Plus HI98100 has PH resolution to the 0.01. The HI98103 only measure`s ph to the tenth 0.1. The Checker Plus HI98100 also has automatic calibration to one or two points, automatic buffer recognition, calibrated buffer tags, stability indicator, low battery indicator, and select-able automatic shut off.

Features at-a-glance:

  • Economical – The Checker Plus is a full-featured pH tester at a price that anyone that needs to measure pH can afford. Large LCD - Enhanced LCD that displays reading, stability indicator, low battery indicator and calibration tags.
  • Replaceable pH Electrode - The HI1271 supplied gel filled pH electrode is 103 mm long and tapers to an 8 mm diameter at the sensing end. This narrow electrode easily fits into test tubes, vials, and other containers with small opening.
  • Automatic Calibration - The Checker Plus is calibrated automatically to one or two points. The calibration buffers are automatically recognized and after calibration the buffer values used are shown on the display as a tag.
  • Stability Indicator – An hourglass indicator is displayed on the LCD until a stable reading is obtained. Once a reading stabilized the indicator disappears and a reading can be recorded.
  • Automatic Shut-Off – The meter can be set to automatically turn off after 8 minutes or 60 minutes to conserve battery life in the event that the meter is left on. The auto off feature can be disabled.
  • Long Battery Life - The Checker Plus has an exceptional long battery life of approximately 1000 hours. When the battery power is running low a low battery indicator is displayed.
  • Plastic Carrying Case – The HI98100 Checker Plus is supplied complete with meter, probe, calibration solutions and cleaning solutions packaged in a durable plastic carrying case.


Specifications:

pH Range0.00 to 14.00 pH
pH Resolution0.01 pH
pH Accuracy (@25ºC/77ºF)±0.2 pH
CalibrationAutomatic, one or two points with three standard buffers available (pH 4.01, 7.01 and 10.01)
Battery Type/Life1.5V CR2032 (1) / approximately 1000 hours of continuous use
Electrode/ProbeHI1271 pH electrode with screw type connector (included)
Environment0 to 50°C (32 to 122°F); RH max 95%
Dimensions50 x 174 x 21 mm (2 x 6.8 x 0.9”)
Weight50 g (1.8 oz.) 
Ordering Information

HI98100 is supplied with:

  • HI1271 pH electrode
  • HI70004 pH 4.01 buffer solution sachets (2 x 20 mL)
  • HI70007 pH 7.01 buffer solution sachets (2 x 20 mL)
  • HI700601 electrode cleaning solution sachets (2 x 20 mL)
  • Instruction manual
  • Instrument quality certificate and plastic carrying case.
Warranty1 Year (pH probe 6 months)


Manufacturer Info

Hanna Instruments USA Aquarium Supplies
Hanna Instruments is a leading manufacturer of analytical aquarium instrumentation. They were founded in 1978 and are headquartered in Woonsocket, Rhode Island. When Hanna introduced pH Electronic Paper in 1986 it literally revolutionized the world of testing by allowing millions of people in various industries to test for pH in a simple, accurate and affordable way. Hanna employees are constantly challenging themselves to improve on existing technology and to invent new testing techniques with the common goal to simplify analytical testing. This applies not only to instrumentation, but also to sensors development, reagents and chemicals. Hanna also believes in controlling the quality of their products from inception to delivery so they manufacture everything themselves, from meters and electrodes to chemical reagents and buffer solutions.

Ask a Question Earn 15 Points when you answer a question
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9 Questions
Displaying questions 1-9
 
Q
Calibration has to be done every time used let's say weekly usage
Asked : Mar 15, 2019
By : Carlo Cardarelli, Florida
 
 
 
A
Per Hanna instruments: "The frequency of calibration ultimately depends on how accurate you like your numbers. Calibration on each use is ideal; however, we get that calibration takes some extra time out of what might be a busy schedule. If you can tolerate a little bit of error in your measurement, calibration each time is not completely necessary but is still highly recommended!" For more info on visit Hannas blog post https://tinyurl.com/yxowf37x
Answered : May 03, 2019
By : MD Tech
 
Q
Will the Hanna pH checker work for freshwater ?
Asked : Oct 25, 2018
By : Jacqueline, ON
 
 
 
A
Hi Jacqueline, yes it works for freshwater.
Answered : Oct 29, 2018
By : Kat
 
 
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Overall, others give this:

  • 4.2

10 Reviewers (90%) would recommend this

Overall Rating:

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5  Star
 6
4  Star
 2
3  Star
 1
2  Star
 0
1  Star
 1
 
1
1.0
Buy the better PHeP by Hanna
reviewerbadge
PROS
price
CONS
breaks easily.
REVIEW
I do not understand why Hanna made this pen. Sure when you get it and calibrate it everything is new and exciting. This pen electrode needs to be kept moist at all times. I bought the storage agent and it dried up anyways after a short time. Lower cost entry point but the drying up makes the pen ...Read More
  • 1
Was this review helpful: Yes(1)No(0)
 
 
 
5
5.0
Great PH tester
reviewerbadge
PROS
Easy to read and calibrate.
CONS
none
REVIEW
Easy to use and accurate reading.
  • 1
Was this review helpful: Yes(0)No(0)
 
 
 
3
3.0
PH
reviewerbadge
PROS
When it works it does provide a good reading.
CONS
Needs storage solution, sometimes does not read and requires resetting.
REVIEW
This particular pH is not the easiest checker to calibrate and use. It also requires solution drops for storage that do not come with the unit and it was not clear you needed this until after delivery of product. Probably should have picked a higher priced pH version from This manufacturer.
  • 0
Was this review helpful: Yes(1)No(0)
 
 
 
5
5.0
So easy to use

reviewerbadge
REVIEW
So simple and easy to use. I don't no why i didnt buy sooner
  • 1
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5
5.0
Works Great!

reviewerbadge
PROS
Quick easy and accurate
CONS
None
REVIEW
Love the ph checker plus! No more color matching or counting drops. Calibrate, stick in tank and boom precise reading! Only regret not buying the Hanna testers a long time ago.
  • 1
Was this review helpful: Yes(3)No(0)
 
 
 
5
5.0
Hanna does it again
reviewerbadge
PROS
Quick and accurate
REVIEW
So much easier than any chemical test just put it in the water and boom an accurate reading, and at a really fair price.
  • 1
Was this review helpful: Yes(2)No(0)
 
 
 
4
4.0
Easy to use

reviewerbadge
PROS
Quick reading, price is fair
CONS
Initial calibration was a little confusing but still took less than 10 min
REVIEW
I have been using this for about a month. It is a great product seems to be very accurate and of course better than deciphering a titration style test kit
  • 1
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Write Your Review Earn 15 Points when you write a review
Sort by:
 

Overall, others give this:

  • 4.2

10 Reviewers (90%) would recommend this

Overall Rating:

download image
5  Star
 6
4  Star
 2
3  Star
 1
2  Star
 0
1  Star
 1
 

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