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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💧 Keep your pH game flawless — hydration that powers precision!

COMPLETE YOUR GROW KIT - Pair with Bluelab TDS meters and other hydroponic tools for comprehensive nutrient management.
PRECISION P H MONITORING - Keep your measurements sharp for perfect pH adjustments in water, soil, and hydroponic setups.
TRUSTED INDUSTRY LEADER - From Bluelab, the gold standard in hydroponic testing, engineered for professional growers who demand accuracy.
EXTEND YOUR PROBES LIFE - Hydrate and store your pH pens with 120ml of premium KCl solution to maintain peak accuracy.
TAILORED FOR BLUELAB DEVICES - Specifically designed for Bluelab pH pens and probes, ensuring seamless compatibility and reliable results.

The BluelabSTSOL120 is a 120ml KCl storage solution designed to hydrate and maintain Bluelab pH pens and probes, extending their lifespan and ensuring precise pH measurements across water, soil, and hydroponic systems. Ideal for professional growers seeking reliable, accurate nutrient monitoring.

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Manufacturer	Bluelab
Product Dimensions	12.29 x 3.99 x 3.99 cm; 141 g
Part number	STSOL120
Material type	Glass
Power source type	Hand Powered
Item model number	STSOL120
ASIN	B098GZ8S42

BluelabSTSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow

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