Best in 7 days
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
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Description
Bluelab® 2.77EC Conductivity Solution, 500mlThe 2. 77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC ppm probe. Calibration Solution should be stored in a cool place out of direct sun and heat. Please keep out of reach of children. They should be stored with the lids securely tightened.
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
4.6 ★★★★★
Based on 152 reviews
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Product Reviews
★★★★★ 5
Quality Watch
Color: 5566-ZP-white face
A very nice looking inexpensive watch for work if you are in a job that you don't want to wear an expensive watch.
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Reviewed in the United States on January 15, 2026
★★★★★ 4
As Advertised
Color: 5535-HP-white
The watch is what I expected, and works upon receipt as advertised. At this price, if it only works for 4-6 months it's easily worth the money. Large, nice looking face, day/date. Wristband is what you'd expect, but adequate and comfortable.
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Reviewed in the United States on December 25, 2023
★★★★★ 3
Dies after a Year
Color: 5566-ZP-white face
Watch worked fine for about a year, then just stopped working - just like that. No amount of shaking or gentle impacts would get it to start ticking again.
I'd also say my biggist issue with it was it was always difficult to tell which hand was the second hand and which hand was the minute hand since they're both the same color and thickness. Wish the hour and minute hands were a little thicker so they'd stand out a little better and/or that the minute hand was a different color so it was offset. Resulted in having to study the watch to get the time instead of a quick glimpse to see what time it was. Irritating after a while.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
They were lightweight and attractive
Color: 5535-HP-white
Sleek and attractive
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Blue faced watch.
Color: 5535-ZP-blue
Looks great
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Reviewed in the United States on May 23, 2026
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