Features & Benefits
- Essential for use with all Bluelab products
- Ensures accuracy and longevity of Bluelab products
- Meets high laboratory standards
- Easy to use
- Helps to avoid contamination
- Should be stored in a cool place
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Item #:
12771552
Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each
88% of respondents would recommend this to a friend
Item #:
12771552
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The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity/Temperature probe.
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What Stands Out
Accurate Calibration
Ensure precise measurements with Bluelab's pH solutions, providing reliable calibrations at pH 4.0 and 7.0 for consistent performance in various applications.
Comprehensive Set
Includes both pH and EC conductivity solutions, offering a complete calibration package for hydroponics, aquaponics, and soil testing needs.
Generous Volume
Each 500 ml bottle provides ample solution for multiple calibrations, ensuring long-lasting use and excellent value for both hobbyists and professionals.
Product Details
- Contains 500 ml each of Calibration Solution pH 4.0, pH 7.0, and 2.77 EC Conductivity Solution
- Ideal for calibrating pH and conductivity measuring instruments
- Ensures accurate and reliable readings
- pH 4.0 solution is used for acidic measurements
- pH 7.0 solution is used for neutral measurements
- EC Conductivity solution measures the electrical conductivity of a solution
| Product Dimensions (L x W x H) | 6 x 3 x 4 inches (15.2 x 7.6 x 10.2 cm) |
| Item Weight | 3.45 pounds (1.55 kg) |
| Brand | bluelab |
| Item Volume | 500 Milliliters |
| Package Information | Bottle |
| Item Form | Liquid |
Who Should Buy?
-
Hydroponic Growers
Essential for maintaining accurate pH and EC levels in hydroponic systems, promoting healthy plant growth.
-
Laboratory Technicians
Ideal for calibration and maintenance of pH meters and EC meters in laboratory settings.
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Educational Institutions
Useful for teaching students about pH and EC measurement in chemistry and biology classes.
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Home Gardeners
Casual gardeners may find simpler testing methods sufficient and won't need specialized calibration solutions.
Product Description
Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each
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Customer Questions & Answers
-
Question:
Why is calibration important for Bluelab products?
Answer: Calibration is important for Bluelab products because it ensures the accuracy and longevity of the products. -
Question:
What can happen if cross-contamination occurs?
Answer: Cross-contamination can affect the validity of the calibration. -
Question:
Where should the solutions be stored?
Answer: The solutions should be stored in a cool place out of direct sun and heat. -
Question:
What is the difference between kcl storage solution and 2.77 ec conductivity standard solution?
Answer: The difference is that the description of 2.77 EC conductivity standard solution is a typo, it should actually be 27.7. Both solutions contain KCl and water. -
Question:
How long does the 7.0 and 4.0 calibration solutions last once opened?
Answer: It can last for several months if stored properly. Storing it at around 70°F is suitable. It is recommended to pour out a little each time you calibrate and be careful not to contaminate the solution.
bluelab Electrolyte Solutions Editorial Review
This product is highly recommended for those using a pH meter or dissolved solids meter for growing. The accuracy of this product ensures that you have reliable information on your water pH and fertilizer strength. Although it is not cheap, customers found it to be worth the investment. The product came sealed and new, and customers were satisfied with the quality and fast shipping. However, some customers reported a delay in shipping, but it did not affect their overall satisfaction with the product.
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Pros
- Accurate
- Reliable
- Sealed
- Fast shipping
Cons
- Not cheap
Platform Trust & Buyer Confidence
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Eddie
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“Purchased from Europe and arrived within 10 days. Very happy with the service”
30 August 2026 · via Trustpilot
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“Always quick always punctual”
25 August 2026 · via Trustpilot
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“Quick turn around, under a week from the USA to Australia’s far north (very very remote delivery location)! I will definitely be ordering from Ubuy Australia in the future.”
18 August 2026 · via Trustpilot
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“Quick and easy and quality products. Fast delivery.”
7 August 2026 · via Trustpilot
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