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

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Traceable | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)

Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Traceable | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)

Product ID: 32105900

Details

Brand
Bluelab
Item Form
Liquid
Item Volume
500
Molecular weight
32.06
Package Information
Bottle

⏳Long shelf life, ready-to-use

🧪Dual pH 4.0 & 7.0 calibration

⚖️NIST traceable precision

14172 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered 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 Iceland.

Secure transaction

Description

⚡ Calibrate like a pro, grow like a boss!

VERSATILE APPLICATION - Perfect for hydroponics, gardening, aquariums, and swimming pools.
DUAL CALIBRATION POWER - Includes both pH 4.0 and 7.0 solutions to cover a wide calibration range.
EFFORTLESS MAINTENANCE - Ready-to-use bottles save time and keep your pH pens performing at peak.
PRECISION YOU CAN TRUST - NIST traceable solutions ensure lab-grade accuracy for your pH meters.
EXTEND YOUR EQUIPMENTS LIFE - Regular calibration boosts longevity and reliability of your pH meters.

The Bluelab pH 4.0 & 7.0 Calibration Solution Kit offers NIST traceable, dual-buffer solutions in convenient 500ml bottles, designed to maintain and extend the accuracy and lifespan of your pH meters. Ideal for hydroponics, gardening, aquariums, and more, it ensures precise pH readings with minimal effort and long shelf stability.

Specifications

ASIN	B01GQVSQGG
Best Sellers Rank	#18,477 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #26 in Lab pH Meters
Brand Name	Bluelab
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (1,149)
Included Components	One 500ml of ph4 and One 500ml of ph7
Item Form	Liquid
Manufacturer	bluelab
Model Number	BL-COMBO-1
Molecular Weight	32.06
Part Number	BL-COMBO-1
Unit Count	2.0 Count
Volume	500 Milliliters

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

14172 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered 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 Iceland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews