Can you reuse solutions?

Yes a couple of times but I wouldn’t pour it back in the bottle if you’ve used it already. For example I have 3 ph meters so I’ll put some of each in a cup and use the same solution to calibrate all 3 of my ph meters then toss the solution. The bottles last a long time though.

The bottle doesn’t specify how much solution to add to how much water to make the ph 7.0 and 4.0 solutions. It just says add the required amount???

You don't add anything its pre made to the ph level.

Can i use this solution for other brand ph meters ? i own a adwa ph meter, or is this only for bluelab products ?

It will work for all PH meters.

How often would I expect to run out of solution? I would hope for $45.00 this would last a t least a year.

I believe it will last a year I Calibrate my pen whenever it goes out of calibration which is usually about once a month

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Bluelab pH 4.0 & 7.0 Calibration Solution (500ml)

Bluelab pH 4.0 & 7.0 Calibration Solution (500ml)

Product ID: 712457668

Details

Brand
Bluelab
Item form
Liquid
Item volume
500
Manufacturer
Bluelab
Package information
Bottle

💧Generous 500ml volume for multiple calibrations

📏Precision-calibrated to lab standards

🧪Dual pH buffers (4.0 & 7.0) for accurate calibration

E£ 18564

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Description

📊 Calibrate like a pro, grow like a boss!

LAB GRADE ACCURACY - Ensure your pH meter delivers spot-on readings every time
EXTENDED USE VOLUME - 500ml bottle supports repeated calibrations without frequent repurchasing
TAILORED FOR BLUELAB - Specifically formulated to maximize the lifespan and accuracy of your Bluelab devices
CLEAN PROBE ASSURANCE - Includes conductivity standard to verify probe cleanliness and maintain reliability
DUAL CALIBRATION SOLUTIONS - Cover both acidic and neutral pH points for flawless calibration

The Bluelab pH 4.0 & 7.0 Calibration Solution (500ml) is a premium, lab-standard liquid calibration set designed exclusively for Bluelab pH meters. It ensures precise, reliable readings by providing dual buffer solutions for acidic and neutral pH calibration, while the included conductivity standard helps maintain probe cleanliness. Trusted by over 1,100 users with a 4.7-star rating, this 500ml bottle supports multiple calibrations, making it an essential tool for professional growers committed to accuracy and optimal plant health.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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E£ 18564

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B01GQVSQGG
Brand Name	Bluelab
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (1,103)
Item Form	Liquid
Manufacturer	Bluelab
Model Number	BL-COMBO-1
Part Number	BL-COMBO-1
Volume	500 Milliliters

Bluelab pH 4.0 & 7.0 Calibration Solution (500ml)

Details

Details

Description

Specifications

Common Questions