SKU: 39231523437

Rat E2 (Estradiol) ELISA Kit

Sale price$267.75 Regular price$297.50
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Ships within 48 hours Β· Estimated delivery Jul 18 - Jul 23

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Description

Rat E2 (Estradiol) ELISA KitThe Rat (E2) Estradiol ELISA Kit measures Estradiol in Rat samples. Add samples to the pre coated plate. Then add biotinylated antigen. The antigens in the samples compete with the biotinylated antigen to bind to the capture antibody and incubate. Unbound antigen is washed away during a washing step. An avidin HRP is then added and then incubate. Unbound avidin HRP is washed away during a washing step. TMB Substrate is then added and color develops.

The Rat (E2) Estradiol ELISA Kit measures Estradiol in Rat samples. Add samples to the pre-coated plate. Then add biotinylated antigen. The antigens in the samples compete with the biotinylated antigen to bind to the capture antibody and incubate. Unbound antigen is washed away during a washing step. An avidin-HRP is then added and then incubate. Unbound avidin-HRP is washed away during a washing step. TMB Substrate is then added and color develops. The reaction is stopped by addition of acidic stop solution and color changes into yellow that can be measured at 450 nm. The intensity of the color developed is inversely proportional to the concentration of E2 in the sample. The concentration of E2 in the sample is then determined by comparing the O.D. of the samples to the standard curve.

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SKU: 39231523437

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Steve
Boise, US
β˜…β˜…β˜…β˜…β˜… 4
3.5, Not 3.0
Color: Medium Set of 6
These balls were almost exactly what I needed. I was replacing my boy’s favorite ball, which is the 3” squeaky, spikey ball that fits in the chuck it launcher. Unfortunately I saw the shiny object next to it and because there were SIX balls and a dollar less, I failed to see that these are 3.5” balls instead of 3”…. Great balls but no fitty in the slingy. Buyer beware. No chuck it no problem. Save a buck.
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Reviewed in the United States on March 9, 2026
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HollisHoHo
Draper, US
β˜…β˜…β˜…β˜…β˜… 5
MY CHIHUAHUA LOVES THESE BALLS!!
Color: Samll Set of 8
My little chihuahua, BamBam, is addicted to balls, especially little balls that squeak! However, any balls that have material on them, BamBam will tear them apart, swallow the material and then get an upset tummy! These balls saved the day! BamBam LOVES them & she cannot tear them apart! They hold up so well! No matter how much BamBam plays with them, they keep squeaking away!
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Reviewed in the United States on July 15, 2025
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Verified Purchase
Laurens springerslng
Omaha, US
β˜…β˜…β˜…β˜…β˜… 5
Great thick squeaky ball
Color: Large Set of 2
These are good thick rubbery squeaky balls. My boy loves them! He's 75lbs. Strong chewer. I hav hard time squeezing to squeak, but he doesn't... He loves it!!!
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Reviewed in the United States on March 24, 2026
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g a ross
Louisville, US
β˜…β˜…β˜…β˜…β˜… 5
Squeaky ball
Color: Large Set of 4
Perfect squeaky ball. Dogs love them. I love that they're durable and their thickness aids their durability. My Great Dane will play alone for hours with a ball.
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Reviewed in the United States on June 20, 2025
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Ricky Bobby
Fort Morgan, US
β˜…β˜…β˜…β˜…β˜… 5
Fun
Color: Interactive Dog Ball
Fun! Second purchase. Solid and rugged for 22 lb dog. He loves it.
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Reviewed in the United States on December 21, 2025

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