比率测量
Ratiometric imaging uses a ratio of images to determine ion concentration, voltage or pH levels in a cell of a cell network. One common example is the Fura-2 fluorophore, which absorbs light preferentially at 380nm in high intracellular concentrations of calcium and absorbs light preferentially at 340nm in low concentrations of calcium. By exciting the sample at these two wavelengths and taking a ratio of the image, a semi-quantitative determination of calcium levels is possible. Other ratiometric fluorophores, like INDO-1, undergo a change to their emission wavelength under differing ion concentrations.
If you don’t see what you are looking for, please contact us. We have a large inventory of filters and a knowledgeable staff ready to help you design and build a filter to meet any specification.
Ratiometric Calcium Indicators - Fluorescence Excitation Spectra of Fura2
© 2022 Thermo Fisher Scientific Inc. Used under permission.
www.thermofisher.com
Showing 3 products
- (-) Remove 比率测量 filter 比率测量
- (-) Remove Reclaimed Cubes filter Reclaimed Cubes
产品类型
应用
中心波长/边通波长/陷波波长
79001
NC1135824 - ET - Fura 2
Premounted in a Leica DMi8 standard filter cube, for 25mm filters, fits 1mm-thick dichroics (91050)
Qty in Stock: 1
Filters in this Set | Price | ||
---|---|---|---|
ET340x (EX) | $ | 365.00 | |
ET380x (EX) | $ | 365.00 | |
T400lp (BS) | $ | 250.00 | |
ET510/80m (EM) | $ | 365.00 | |
New Set Price | $ | 1,150.00 | |
New Cube Price | $ | 548.00 | |
New Set/Cube Cost | $ | 549.00 | |
Reclaimed Cube Cost | $ | 834.00 |
79001
NC1180890 - ET - Fura 2
Premounted in a BX3/IX3 filter cube (U-FF, U-M710) For Olympus BX3 and IX3 models for 25mm filters (91038)
Qty in Stock: 1
Filters in this Set | Price | ||
---|---|---|---|
ET340x (EX) | $ | 365.00 | |
ET380x (EX) | $ | 365.00 | |
T400lp (BS) | $ | 250.00 | |
ET510/80m (EM) | $ | 365.00 | |
New Set Price | $ | 1,150.00 | |
New Cube Price | $ | 578.00 | |
New Set/Cube Cost | $ | 579.00 | |
Reclaimed Cube Cost | $ | 833.30 |
79001
NC1180920 - ET - Fura 2
Premounted in a BX2 filter cube (U-MF2) For Olympus BX2 and IX2 models (91018)
Qty in Stock: 1
Filters in this Set | Price | ||
---|---|---|---|
ET340x (EX) | $ | 365.00 | |
ET380x (EX) | $ | 365.00 | |
T400lp (BS) | $ | 250.00 | |
ET510/80m (EM) | $ | 365.00 | |
New Set Price | $ | 1,150.00 | |
New Cube Price | $ | 578.00 | |
New Set/Cube Cost | $ | 579.00 | |
Reclaimed Cube Cost | $ | 833.30 |