General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green
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This item is eligible for return within 30 days of receipt
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Availability:
Only 1 left in stock, order soon!
Arrives
Jan 16 – Jan 20
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Style: Calibration Solution
Size: 1 quart
Features
- General Hydroponics uses the highest quality electronic meter reference solutions
- Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale
- General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used
- For calibration of pH Meters and electrode storages
Description
General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
Product Dimensions: 3.7 x 8.5 x 4.2 inches
Item Weight: 0.01 ounces
Manufacturer: Hawthorne Hydroponics, LLC
Item model number: GH1552
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jan 16 – Jan 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Use it for single point calibration on a Ph pen. Works great, no comolaints.
Reviewed in the United States on April 28, 2023 by karen williams
I felt i needed to clarify what this product is used for, because of all the reviews stating they used this to ph their water or nutrient water. GH has a product called "ph up" and "ph down," and that's literally what they're for. This liquid product which is green in color is specifically for CALIBRATING YOUR DIGITAL PH METER!!! And also is suitable for using as electrode storage solution. You put this in your ph cap that your ph meter goes into and it helps preserve it and makes it so your meter doesn't take a thousand years finally deciding what the ph is. Do we all understand what this is for now??? Good!!! : )
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Reviewed in the United States on September 16, 2021 by SALAMINIZER_1
In my opinion the General Hydroponics brand is rock solid. I have used a lot of their nutrients and maintenance products and always find them to be the highest quality. This product is no exception. If you care about PH, and you should, regular testing and re-calibration of your meter is essential. For me the 7.0 is perfect since I operate in the 5.5-6.5 PH range. I used to use the 4.0 as well to verify the calibration settings but over time found the 7.0 to be sufficient. I was checking my meter once a month or so and it was not often enough so I decided to get the larger bottle so I can test my meter more often. I use the small paper Dixie cups you use in the bathroom for kids and toss them afterwards as it's best to not reuse the solution. This bottle should last a long time. Definitely recommend this for checking/calibrating any PH meter that has this feature.
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Reviewed in the United States on November 25, 2019 by E. A. Jacques
Bottle is a larger size then I expected. Ive used brand this for years and find it very consistent.
Reviewed in the United States on September 30, 2021 by Sparky
I've used this product before and it was fine but the recent bottle seems to be off by 0.2. I'm guessing it was a bad batch as another user who purchased recently had the same results. Issued a return and I'll update with the results. EDIT: Replacement has the same issue unfortunately. This was verified with a second calibrated meter as well as a different reference solution. The meter calibrated in the 7.2 solution read .2 low on the 6.86 calibration solution. The properly calibrated device read 6.86 on the 6.86 solution and 7.2 on the GH 7.0 solution. I'll give it 2 stars because this product has been accurate and a good value in the past and will probably be in the future, however, learning about this potential quality control issue makes this is a non buy for me going forward.
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Reviewed in the United States on February 15, 2021 by Dave
Loved it
Reviewed in the United States on May 14, 2022 by David Lebowitz
Cheapest 7.0 solution per oz I could find on Amazon. Doubles as a storage solution if your PH meter requires being stored wet. Generally, General Hydronics products are one of the most reliable out there, from nutes, supplements, etc. Good quality and usually the best value.
Reviewed in the United States on December 15, 2018 by Ann
The general hydroponics 7.0 PH solution is great for the meters that have a manual calibration screw. It’s so much easier than using the powdered packets. If you have an auto-calibrate meter, chances are, it’s set to calibrate to 6.86 I use about half of a shot glass before use on any of my pen type ph meters. This bottle lasts forever doing that way.
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Reviewed in the United States on January 27, 2019 by WillyJay