Best in 7 days
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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
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Description
Bluelab Conductivity Standard Solution 2.77 EC 250mlIs your conductivity instrument adequately cleaned and giving accurate results? Most of Bluelabs EC ppm equipment does not need calibrating as they are all factory calibrated here at Bluelab (except Bluelab EC and ppm Pens). The 2. 77 EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe. To ensure solutions remain accurate: Avoid cross contamination Decanter into a smaller plastic cup Discard
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 1247 reviews
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Product Reviews
★★★★★ 3
Didn’t meet full expectations
Size: One Size, Color: (001) Black / Black / Jet Gray
Much shorter than anticipated.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
★★★★★ 5
Perfect thickness and soft feel.
Size: 6-10, Color: Halo Gray/Assorted
Why did you pick this product vs others?:
Love theses socks. It's hard to find socks which won't get pulled down by athletic shoes. These stay put.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 29, 2025
★★★★★ 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
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