How much storage solution do you use and do you change it each time you use the device? New to this. Thank you.

I do not change it every time I use the device. I rinse my probe of in distilled and shake/pat dry. The kit come with a storage cap. It has a fill line. I was told on the phone by apera that if storing in the case fill to about half way to the fill line and make sure probe is wet. It's only a few Ml in the cap. I normally top it off when needed but the bottle should last you a very long time. I use it to refill the small bottle in the kit. It's not completely air tight so you may find some solution crust around the top of the cap from time to time. just clean it and you should be good. I am using my meter 3-5 times a week now and have only used about 1" of solution out of the bottle in two months.

Is this solution only used for long term storage, or short term as well? Is there a need to recalibrate after storing in this?

You have to calibrate the meter weekly; if storing longer, calibrate it before use. the solution is good until the next time you use the meter.

This states to use storage solution when not in use is a recommended practice, what is the "recommended practice" as it does not state on the PH20?

It is recommended in the PH20 instructions to use the Apera product (Kaliumchlorid) to store the PH20. That is, fill the container (probe protector) to the line with the Kaliumchlorid liquid, and insert the probe into the protector. I store the AP20 in its case and on its side (probe pointing down) to insure the probe is in the liquid. This also prevents liquid from leaking out.

Is the solution placed in the cap of the PH20 meter?

We now store the cap with water droplets to maintain a modest humidity in the cap. In this way, the probe is ready for its first customer, and they can choose whether to store in 3m KCl or use an alternative method.

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Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes

Product ID: 131116090

Details

Brand
Apera
Item Volume
8 Fluid Ounces
Item Weight
9 Ounces
Molecular formula
kcl
Product Grade
Lab

⏳Clear expiration date for reliability

🔒Double-sealed freshness guarantee

🧪3M KCL reagent-grade purity

E£ 3448

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Description

🧪 Keep your probes sharp, your data sharper!

LAB GRADE PURITY - Reagent-grade 3M KCL formula ensures precise, consistent probe accuracy every time.
FRESHNESS LOCKED IN - Double-sealed packaging preserves solution integrity until the last drop.
COMPACT CONVENIENT - 8 oz bottle fits perfectly in your lab or field kit for on-the-go maintenance.
EXTEND PROBE LIFESPAN - Keep your pH and ORP electrodes performing like new with expert conditioning.
NEVER MISS A CALIBRATION - Clear expiration date means you always use fresh solution for reliable results.

Apera Instruments 3M KCL Storage Soaking Solution (8 oz) is a lab-grade, reagent-pure liquid designed to condition and extend the life of pH and ORP electrodes. Its double-sealed packaging ensures freshness, while the clearly marked expiration date guarantees reliable performance. Ideal for professionals who demand precision and longevity from their measurement tools.

Specifications

ASIN	B07NXTBD8D
Best Sellers Rank	#9,131 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab Electrochemistry Accessories
Boiling Point	100 Degrees Celsius
Brand Name	Apera Instruments
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (1,184)
Global Trade Identification Number	00810214030843
Included Components	8oz 3M KCL Storage Solution
Item Form	Liquid
Item Weight	9 Ounces
Manufacturer	Apera Instruments
Model Number	AI1107
Molecular Formula	kcl
Part Number	AI1107
Product Grade	Lab
UPC	810214030843
Unit Count	1.0 Count
Volume	8 Fluid Ounces

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