Alumen 450™ dissolved in 90:10 water:ethanol (vol-%) with 100 μM Al³⁺ added to the left cuvette.

Selectivity of Alumen 450™ for Al³⁺ ions, (front center cuvette), Vs other ions shown in Figure 4. All ions were 100 µM concentration, Alumen 450™ was 5 µM.

Alumen 450™ is available in prepacked cuvettes. See on-line store for more information.

Ursa BioScience also offers Aluminum standards supplied in six vial kits, containing approximately 7.5 ml of precisely specified Al³⁺ concentrations. These standards offers the user a fast, reproducible, and cost effective technique to record calibration data. Our standards can be stored on the bench top, at room temperature, with the vial cap tightly closed.

The left cuvette shows a sample of 11.0 μM Ursa 520-R™ dissolved in 90:10 EtOH:H₂0 and placed on an UV-Lightbox. The contour emission spectra recorded for this sample is shown in panel A below. The cuvette to the right shows the same sample, but after 5 equivalents Al³⁺ were added. The contour emission graph is shown in Panel B below.

Contour plots recorded for Ursa 520-R™ at 11.0 μM concentration witout (panel A) and with (panel B) 5 equivalents Al³⁺. The corresponing samples, i.e. the cuvettes, are shown in the image on top of this column.

Time-dependent absorption spectra (0-60 min) recorded for Ursa 520-R™ at 3.0 μM concentration mixed 15 equivalents Al(NO₃)₃. The arrows indicate the spectral trend with time. Panel A and B shows the same data but on different scales.

Ratiometric curves constructed for Ursa 520-R™, with different concentrations of Al(NO₃)₃ as indicated, by dividing absorbance value observed at 255 nm by that observed at 370 nm.

Cuvettes containing ~1 μM Alumen 470™ dissolved in ethanol. The cuvettes are placed on an UV light box and illuminated from below at 365 nm. The cuvette on the right contains an additional 20 uM Al³⁺, which is approximately 20x. Corresponding contour graphs can bee seen in Figure 10.

Alumen 470™ is supplied dry in a prepacked vial for easy reconstitution. Visit our Online Store for current pricing. A short video shows our reconstitution procedure.