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Description
Bluelab EC 2.77 / 1385 ppm standard solution 500 mlBluelab EC 2. 77 1385 ppm standard solution 500 ml Calibration solution for Truncheon, Guardian (conductivity), and ppm EC pen. 2. 77 EC = 1385 TDS ppm (500 scale) = 1890 ppm (700 ppm) Bluelab's EC CF equipment does not need calibrating as they are all factory calibrated at Bluelab. The CF27. 7 (EC2. 77) solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe.
Bluelab EC 2.77 / 1385 ppm standard solution 500 ml
Calibration solution for Truncheon, Guardian (conductivity), and ppm/EC pen.2.77 EC = 1385 TDS/ppm (500 scale) = 1890 ppm (700 ppm)
Bluelab's EC/CF equipment does not need calibrating as they are all factory calibrated at Bluelab. The CF27.7 (EC2.77) solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/CF probe.
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4.6 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Comfy, great quality
Size: 6-10, Color: White
I’ve had these for quite a while now. They are holding up very well as i wear them a lot for work (coaching). They are very cushiony and most importantly, they do not slip!
I would compare these to Bombas but at a significantly better price point.
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Reviewed in the United States on December 18, 2024
★★★★★ 5
My favorite socks now!
Size: Medium, Color: Deep Sea/Breaker Blue/Electro Pink
I love socks! And these are quickly becoming my favorites! They do not slide down into your shoe no matter if you are working out or just wearing them for normal everyday use. The price is a little higher than I would normally pay for 3 pair of socks, but after wearing these for a few weeks, I think the quality and comfortability of these socks is well worth the money.
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Reviewed in the United States on November 1, 2023
★★★★★ 5
Happy!
Size: Medium, Color: Deep Sea/Breaker Blue/Electro Pink
Happy with the comfort and quality of these socks. I would buy again!
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Reviewed in the United States on September 29, 2025
★★★★★ 4
Great fit and cushioning
Size: Medium, Color: Deep Sea/Breaker Blue/Electro Pink
Great fit for running and nice cushioning for tennis
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Reviewed in the United States on April 11, 2024
★★★★★ 5
Quality, comfort and support.
Size: Medium, Color: Deep Sea/Breaker Blue/Electro Pink
These socks are the bomb! If you are athletic or on your feet for extended periods these great looking, well made socks are constructed to offer just the right amount of compression and support. The toe is soft and thick. I will order these again and again. Hopefully Amazon will add even more color choices on the future.
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Reviewed in the United States on December 3, 2022