The store will not work correctly in the case when cookies are disabled.
Bulk Reef Supply Saltwater Logo
Bulk Reef Supply Freshwater Logo

FREE Shipping Over $49

Free Shipping

Orders Over $49 Ship Free

$5.99 economy shipping on orders under $49

Learn More
| Earn Reward Points
Skip to Content
Menu BRS Freshwater
My Cart
    • My Account
    • My Wish List
    • My Orders
    • Address Book
    • Sign Out
    • Reward Points
  • Sign In
Bulk Reef Supply Mobile Menu
Close

Quick Links

  • Deals
  • Gift Cards
  • What's New
  • Education
  • Clearance
  • Open Box
  • PR Rewards
  • Shop Brands
  • FAQs
  • Saltwater
Menu
Fast Shipping Fast Shipping
Sign up to be a Reward Member Earn Reward Points
Returns 365-Day Returns
Experts Aquarium Experts
  • Fast Shipping Fast Shipping
  • Sign up to be a Reward Member Earn Reward Points
  • Returns Risk-Free 365 Day Returns
  • Experts Aquarium Experts
Loading...
Hanna Instruments

Alkalinity PPM Colorimeter HI755 Hanna Checker - Marine Water

In stock
Out of stock
SKU
206201
Be the first to review this product
$67.99 $67.99

- +
Add to Wish List
Risk Free 365 Returns

Your Satisfaction Guaranteed With
365 Day Risk Free Returns

No longer need what you ordered? Ordered one too many? We've got your back.


Return new, unopened products in original packaging within 365 days for a full refund.

Under 60 days? No problem. We’ll issue your refund to the original form of payment. Over 60 days? Still no problem. We'll issue your refund in the form of store credit, which you can use like cash on our website.


Return unused, open box products within 30 days.

Open box but still unused? We can help. We’ll issue your refund to the original form of payment minus a small 10% restocking and handling fee.

Some exclusions apply, for more information go to Return & Replacement Details.

Skip to the end of the images gallery
main product photo
Skip to the beginning of the images gallery
Details

The Hanna Alkalinity checker is an awesome little tool that will give you accurate easy to read results.  If you have bad eyes or have a hard time with titration test kits, the digital read out on the Hanna checkers is super nice and easy to read.  The biggest key with Hanna checkers is keeping the vials nice and clean for consistent results.  The Hanna Alkalinity Checker does give readings in Parts per Million, which can easily be converted to DKH or meq/L.

Three simple steps to results. The Hanna Alkalinity Checker bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable and easy to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Hanna Alkalinity Checker, press the button and read the results. Done.

 

Easier to use and more accurate than chemical test kits

Adaptation of Standard Method 4500-P E Accuracy 4% ±0.04 ppm (mg/L) of reading 0.04 ppm (mg/L) resolution (250 points) Large, easy to read digits Auto shut-off.

 

Dedicated to a single parameter

Designed to work with HANNA's liquid reagents. Uses 10 mL glass cuvettes.

 

Small Size, Big Convenience

Weighing a mere 65 g (2.3 oz.), the Checker®HC easily fits into the palm of your hand or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery. 

  • Range: 0.00 to 300 ppm (mg/L)
  • Resolution: 1 ppm (mg/L)
  • Precision: ±5% of reading ±5% ppm @ 25°C
  • Light Source: LED @ 610 nm
  • Light Detector: Silicon photocell
  • Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
  • Battery Type: (1) 1.5V AAA
  • Auto-off: After 10 minutes of non-use and after read
  • Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
  • Weight: 64 g (2.25 oz.)
  • Method: Colorimetric method

 

Replacement Reagents -  HI772-26 Alkalinity Checker Reagents

 

Instructions: Click Here

More Information
More Information
SKU 206201
UPC 798804897000
Aquarium Type Saltwater
Reviews 172
Write Your Own Review
You're reviewing:Alkalinity PPM Colorimeter HI755 Hanna Checker - Marine Water
Your Rating
Product Questions

Product Questions

I have the HI755 Alkalinity check (ppm). The replacement reagent (HI772-26 Alkalinity Checker Reagents) is not the same reagent the came with the unit (HI755S). Are the compatible?
Question by: Maurice Thomas on Feb 3, 2020, 8:29 PM
0
Hey there,

That would be the correct reagents, it is actually doing the same test, just displaying the results differently.
Answer by: Thomas Billington on Feb 5, 2020, 12:53 PM
0
Whats the difference in hanna hi772?
Question by: edmond mahmoodi on Jan 23, 2018, 12:25 AM
0
This will give you a reading in parts per million (PPM) where the HI772 will give you a reading in DKH. Besides that, they work exactly the same.
Answer by: Charlie on Jan 25, 2018, 7:04 PM
0
I have started using this Alkalinity check and have noticed that the tests come back much lower than the Salfert test. I thought it was old reagents and purchased new ones I test 6.5 KH to salfert 11 dKH. I do the ppm match "ppm * .056 = dKH"
Still reads much lower than Salfert.

Even with the 5ppm error range in the Hanna. I can not make heads or tails on this.
Question by: mholzapfel on Jun 4, 2016, 11:13 AM
0
Hey there,
I am sorry to hear about the differences in your test kit. We have had great luck with hanna in the past and certainly have used their products and standards regularly. At this point we recommend reaching out to hanna to ensure the checker is up to par and functioning correctly with the use of standards or other re-calibrating effects.
Hanna Instruments – 800-426-6287 custsvc@hannainst.com
Answer by: Connor on Jun 9, 2016, 12:49 PM
0
where can I buy the reagent?
Question by: Richard Granofsky on Apr 19, 2016, 3:05 PM
0
Hey there, I have attached the link below. Feel free to let us know if you have any further questions! https://www.bulkreefsupply.com//hi772-26-alkalinity-checker-reagents-hanna.html
Answer by: Connor on Apr 19, 2016, 6:24 PM
0
Hi would you ship to the UK on a large order please
Question by: andy Hartley on Jan 30, 2016, 4:43 AM
0
Great question,
Unfortunately we are only able to ship to the US and Canada at the moment. Feel free to let us know if you have any further questions!
Answer by: Connor on Feb 9, 2016, 4:31 PM
0
Does this product come with the alkalinity reagent?
Question by: Alexander on Nov 26, 2013, 3:12 PM
1
Hi Alexander,
Yes the checker comes with reagents for about 25 tests.
Answer by: Bulk Reef Supply on Nov 26, 2013, 3:12 PM
0

SIGN UP FOR THE BULK REEF SUPPLY NEWSLETTER

Don’t be the last to know this holiday season about sales, specials, new products, and more!

Sign Up Now
BRS Fresh https://media2.cdn.bulkreefsupply.com/media/logo/stores/1/BRS-Logo-498x174.png https://fresh.bulkreefsupply.com/
BRS Fresh Bulk Reef Supply
  • Facebook Opens a new window
  • Youtube Opens a new window
  • Instagram Opens a new window
  • TikTok Opens a new window

Contact

  • 763-432-9691

  • 8am - 6pm CT M-Th
    9am - 4pm CT Friday
  • support@bulkreefsupply.com
  • 6325 Sandburg Road, Suite 200
    Golden Valley, MN 55427 US

Bulk Reef Supply
About Us
Customer Service
Careers
Wholesale Customers
Instructions
Terms & Conditions
Customer Center
Preferred Reefer Program
International Shipping
Returns & Replacements
Payment, Pricing & Promos
Shipping & Delivery
APL Star Logo
© 2025 Aperture Pet & Life. All Rights Reserved.
Privacy Policy

item(s) Added to Your Cart

Product Name

View Cart Checkout Now
You may also like
PE Pellets Community Fish Food 1mm (4oz)
Piscine Energetics
PE Pellets Community Fish Food 1mm (4oz)
$9.99 $9.99

Prime - Complete Concentrated Water Conditioner
Seachem
Prime - Complete Concentrated Water Conditioner
From: $4.52

Choose Options
Robotic Fish STEM Science Set
Bulk Reef Supply
Robotic Fish STEM Science Set
$29.99 $29.99

1 oz. Bottle BRS Extra Thick Gel Super Glue
Bulk Reef Supply
1 oz. Bottle BRS Extra Thick Gel Super Glue
Rating:
87%
4 Reviews
$7.99 $7.99

Diamond Black Bio-Substrate (5lbs)
Aqua Natural
Diamond Black Bio-Substrate (5lbs)
$12.99 $12.99

Spider Wood
Ultum Nature Systems
Spider Wood
From: $7.99

Choose Options
AI Freshwater Hat
AquaIllumination
AI Freshwater Hat
$24.99 $24.99

River Rock/Coral Bliss Aquarium Backgrounds
SeaView
River Rock/Coral Bliss Aquarium Backgrounds
From: $15.99

Choose Options
Artificial Moss Ball
Fluval
Artificial Moss Ball
$6.99 $6.99

Aqua Essential Water Conditioner
API
Aqua Essential Water Conditioner
From: $8.68

Choose Options

Login and Registration Form

  • Login
  • Register

Registered Customers
If you have an account, sign in with your email address.
Forgot Your Password?
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple

Personal Information
Sign-in Information
Password Strength: No Password
Back
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple
  • Forgot Your Password?

Please enter your email address below to receive a password reset link.
Go back