This product is named as ph probe soil tester, while the picture is of the kci storage solution? which product is this?

The probe end of the pH tester needs to be protected when not in use. This stuff is what's use the store the probe in.

How long does a 100ml bottle last, if using the probe once a day?

As long as the cap has solution in it (glass bulb is immersed) when stored, then it should last at least a year. You may need to top it up from time to time, but you shouldn't be rinsing or tipping the contents of the cap out on each use.

This item description is for soil testing however the item pictured is the kcl storage solution. which product is it?

This is KCl storage solution. I have submitted incorrect Product name to the seller.

What exactly is the solution? Thanks

it helps in keeping the the test probe from drying out .i highly recommend it been using the same blue lab ph pen for over a year and id like to think its from storing it properly. blue lab is the way to go

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Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow

Product ID: 490793065

Details

Brand
Bluelab
Item weight
0.14 Kilograms
Item volume
120
Package information
Bottle
Item form
Liquid

⏳extends probe lifespan

💧120ml precision hydration

⚖️lab-grade KCl formula

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€ 56.91

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Keep your pH game sharp—hydrate, protect, and measure like a pro!

HYDRATE TO DOMINATE - Keep your Bluelab pH probes perfectly moist for ultra-fast, accurate readings every time.
SEAMLESS COMPATIBILITY - Specifically crafted for Bluelab pH pens and probes—because your tools deserve the best care.
GROW SMARTER NOT HARDER - Maintain optimal pH accuracy to fine-tune your water, soil, and hydroponic systems effortlessly.
MAXIMIZE PROBE LONGEVITY - Prevent costly replacements by extending your pH pen’s life with monthly KCl storage.
PRECISION ENGINEERED FORMULA - Lab-standard potassium chloride solution ensures consistent, reliable pH calibration support.

Bluelab STSOL120 is a 120ml potassium chloride (KCl) storage solution designed exclusively for Bluelab pH pens and probes. It preserves probe hydration, extends lifespan, and enhances measurement accuracy, making it an essential accessory for precise pH management in water, soil, and hydroponic systems.

Specifications

ASIN	B098GZ8S42
Brand	Bluelab
Brand Name	Bluelab
Container Type	Bottle
Customer Reviews	4.7 out of 5 stars 490 Reviews
Item Form	Liquid
Item Weight	0.14 Kilograms
Item form	Liquid
Item volume	120 Milliliters
Item weight	0.14 Kilograms
Manufacturer	Bluelab
Package information	Bottle
Unit Count	4.05 Fluid Ounces
Volume	120 Milliliters

Reviews

E**A

Excelente producto

13.01.2026

S**N

Item good!

10.03.2026

P**R

La précision

Excellent abordable et bon produit

5.05.2022

J**S

a must

30.01.2026

M**E

Work perfect but very expensive...

31.01.2023

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