SKU: 66472171486

E3 (Estriol) ELISA Kit

Sale price$202.50 Regular price$225.00
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

E3 (Estriol) ELISA KitThe E3 (Estriol) ELISA immunoassay kit uses the Competitive ELISA principle. The micro ELISA plate provided in this kit has been pre coated with E3. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin conjugated antibody specific to E3. Next,Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. The enzyme substrate reaction is

The E3 (Estriol) ELISA immunoassay kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with E3. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to E3. Next,Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of E3 in the samples is then determined by comparing the OD of the samples to the standard curve.

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SKU: 66472171486

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jennifer72
Bozeman, US
★★★★★ 5
Tough & fun!
Color: Betty Bigfoot
This is my puppy’s favorite toy. I’ve bought 4 in case he eventually finds a way to destroy the ball because he is a 1 year old super-chewer. That said, this ball is TOUGH! It’s taken severe abuse from our dog & we couldn’t be more satisfied.
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Reviewed in the United States on April 19, 2026
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Sean Lamb
Houston, US
★★★★★ 1
Not as tough as they make it seem
Color: Buck Wild, Color: Buck Wild
My dog chewed it up and destroyed it in less than 4 hours. I have a GSP 8 month old. She’s definitely a super chewer but this didn’t last at all. The tail crumbled apart and she ate some of it.
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Reviewed in the United States on January 23, 2026
D
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Dash Piskator
Whiting, US
★★★★★ 3
This is a HEAVY Toy
Color: Buck Wild
This toy is HEAVY. Really good quality, but my dog hasn’t shown much interest. If you can find a way to get your dog to play with it, I’m sure it would last for awhile.
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Reviewed in the United States on May 25, 2026
D
Verified Purchase
Dogtowndawn
Natrona Heights, US
★★★★★ 5
Barkbox Betty
Color: Betty Bigfoot
A lot smaller than pictured. Still like it. Durable. Dog likes to carry toy around. Dog is 70 lbs and a heavy chewer and toy has lasted.
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Reviewed in the United States on May 9, 2026
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Crystal smith
Massapequa, US
★★★★★ 5
Fave dog toy!
Color: Betty Bigfoot
Great toy! My dog prefers the ball inside which is great for chewing on, bouncing, and playing fetch. Very thick rubber, lasts a good while. The outside cover is pretty tough, but for those who like a challenge it should last a little while. It really depends on how determined and fierce the dog is about chewing! We’ve had 3 of them. We always keep a back up for when one expires!!
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Reviewed in the United States on May 25, 2026

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