SKU: 47155857788

pH Meter Calibration Solution 4.01 6.86 9.18 | Accurate ORP Tester for Plant Growth

Sale price$9.00 Regular price$10.00
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Description

pH Meter Calibration Solution 4.01 6.86 9.18 | Accurate ORP Tester for Plant GrowthThis pH meter calibration solution is designed to help you maintain the accuracy of your pH and ORP testers. It provides a known, fixed pH level for reliable calibration, making it an essential tool for precise plant growth testing and nutrient solution management. Accurate pH readings are critical for healthy plant development. An incorrect acidity level in your nutrient solution can block nutrient absorption, leading to poor growth. Regular

This pH meter calibration solution is designed to help you maintain the accuracy of your pH and ORP testers. It provides a known, fixed pH level for reliable calibration, making it an essential tool for precise plant growth testing and nutrient solution management.

Accurate pH readings are critical for healthy plant development. An incorrect acidity level in your nutrient solution can block nutrient absorption, leading to poor growth. Regular calibration of your pH meter with this solution ensures you are providing the optimal environment for your plants to thrive.

This calibration solution is easy to use and supports a two-point calibration process using both a pH 7 buffer and a pH 4 buffer. This method is key to achieving precise and reliable pH measurements across different testing conditions, helping you get consistent results every time.

By using this calibration solution, you can verify that your pH meter is functioning properly and avoid the guesswork that comes with uncalibrated equipment. It is a straightforward tool that supports better plant care and more effective gardening.

Key Features and Benefits

- Accurate pH calibration that ensures your meter provides reliable readings for precise measurements.

  • Verification of meter accuracy that lets you check if your pH meter is working correctly by comparing readings to a known pH level.
  • Important for plant growth by helping maintain optimal pH levels in nutrient solutions for healthy plant development.
  • Two-point calibration support that uses both pH 7 and pH 4 buffers for precise and reliable pH measurements.
  • Convenient and efficient design that allows for easy calibration without complicated tools.

Who Is This For

- Gardeners and hydroponic growers who need to maintain accurate pH levels in their nutrient solutions.

  • Plant enthusiasts who want to ensure their plants are absorbing nutrients effectively for healthy growth.
  • Anyone using a pH or ORP tester who requires a reliable calibration solution for consistent, accurate readings.

Usage Scenario

A home hydroponic gardener noticed their lettuce plants were showing signs of nutrient deficiencies. They had been using a pH meter but were unsure of its accuracy. After calibrating the meter with this pH 4.01 and 6.86 solution, they discovered their nutrient solution was actually too acidic. Adjusting the pH to the correct range allowed their plants to absorb nutrients properly, and the lettuce began to grow healthy and strong again.

Micro Comparison

Unlike guessing pH levels with test strips, this calibration solution provides a fixed, known standard for your digital meter. It offers a more reliable and repeatable way to ensure accuracy, supporting better decision-making for your plants without the need for complicated laboratory equipment.

Specifications

- Part Name: pH Meter Calibration Solution

  • Material: Plastic bottle
  • Size: As Shown
  • Color: As Shown
  • Styles: 4.01, 6.86, 9.18 (Optional)

Package Includes

- 1 x pH Meter Calibration Solution

Why You Will Love It

This calibration solution takes the uncertainty out of your plant care routine. You can trust your pH readings and make informed adjustments to your nutrient solution, leading to healthier, more vigorous plants. It is a small step that makes a big difference in your gardening success.

Questions and Answers

Question: How do I use this solution to calibrate my pH meter?

Answer: You use the solution as a known standard. Typically, you place the meter probe into the solution and adjust the meter to match the labeled pH value.

Question: Which pH value should I choose for my plants?

Answer: For most plant growth, pH 6.86 is a common calibration point. You can also use pH 4.01 and 9.18 for a broader range of testing.

Question: Can I use this solution for an ORP tester?

Answer: Yes, this solution is designed for use with both pH and ORP testers to ensure accurate readings.

Question: How long does the solution last after opening?

Answer: For best results, use the solution promptly after opening and store it in a cool, dark place. Avoid contamination.

Question: Is this solution safe to handle?

Answer: Yes, it is a standard buffer solution. However, avoid contact with eyes and skin. Wash hands after use.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 47155857788

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Olga
Boise, US
★★★★★ 5
Excellent product at a very good price. I will buy it again.
This is an excellent product at a fair price. The cream creates a barrier that protects the skin, while mosturizes it. leaves hands very soft, and it doesn't feel greasy. I know that this is a favorite brand (Avene) in France, and Amazon offers it at a very good price. I will buy it again, from Amazon. I bought it this year in Paris, and it was more expensive there.
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Reviewed in the United States on May 27, 2015
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Verified Purchase
armine arakelian
Bozeman, US
★★★★★ 1
Drying formula and smell bad
Smell so bad and made my hands dry instead of moisturizing. The formula is watery. Maybe it’s fake or expired I am not sure.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
Z
Zerya
Belleville, US
★★★★★ 5
Beautiful angel statue
Size: 7*5*13 in, Size: 7*5*13 in
Got this angel garden statue about three weeks ago to put in our backyard and we really like how it looks. The resin construction is detailed and well-made, depicting an angel with spread wings and three-dimensional flowers adorning the hair, collar, and skirt hem. The craftsmanship is impressive for the price, gives off a soft romantic vibe. The solar panel on the back charges during the day - they claim 8 hours for a full charge which seems about right with good sun exposure. As night falls, the string lights embedded in the flowers turn on automatically which is convenient. However, the lights are not very bright at all. They emit a warm glow but it’s pretty dim, more of a subtle accent rather than actual illumination. You can see the flowers lit up but it’s not going to light up your garden or anything. The soft tranquil glow they advertise is accurate - it’s definitely tranquil because it’s so faint. Despite the dim lighting, we still like the overall appearance and ambiance it creates. The angel design is elegant and the natural elements blend nicely with our garden decor. The statue is weather-resistant and has held up fine through rain and sun exposure so far. The automatic on/off feature works reliably with the solar sensor. The energy efficiency is good since it’s completely solar powered with no wiring needed. Setup was easy, just stake it in the ground where it gets sunlight. The symbolism of angels and flowers is nice for memorial or decorative purposes. The size is decent, not huge but noticeable in the garden. The resin material feels durable. Would make a thoughtful gift for someone who appreciates garden decorations. Price seems reasonable for what you get. Would I recommend it? Yeah if you want a decorative angel statue with subtle accent lighting, just don’t expect bright illumination at night.​​​​​​​​​​​​​​​​
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Reviewed in the United States on February 24, 2026
J
J. Donch
Natrona Heights, US
★★★★★ 4
Very nice resin sculpture but LED distracting
Size: 7*5*13 in, Size: 7*5*13 in
I was pleasantly surprised at the quality of this resin Angel statue. It looks better, in person, than shown in pictures. The features of the face, and wings, are very nice. What I found distracting/detracting from my overall favorable opinion is that the LED lights are embedded in the flowers at the waist and base. This is distracting at night as they do not illuminate the face or wings but leaves that in darkness with just bright lights around the waist and base. If the lights were higher up, or more directional, perhaps embedded in the wings to light up the face, torso and wings it would be so much better. To use the solar lights at night, care should be taken to ensure the back is directed toward light and that nothing surrounds the statue to block proper charging, The solar panel in back is very small and will not provide much recharging unless in direct light. If placed on the ground, with plants around it, the panel will be shaded which is not efficient. I am very pleased with the actual sculpture and would rate it higher but, I personally find the addition of the solar lights is superfluous, with no real additional value to an otherwise very nice sculpture. As a result, I intend to turn off the solar light and illuminate this with a garden light/spot.
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Reviewed in the United States on February 9, 2026
C
Charlotte Jons
Houston, US
★★★★★ 5
Great Value, Lasts All Night
Size: 7*5*13 in
Impressed with the quality and performance. The angel is sturdy and weather-resistant. The solar panel charges efficiently even on partly cloudy days, and the LED light stays on from dusk until morning. It provides a lovely, gentle light that’s both decorative and functional. Excellent purchase for the price!
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Reviewed in the United States on February 8, 2026

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