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World's Smallest Fiber Optic Dipping Probe for UV/Vis Spectroscopy |
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DipTip™ is a miniature transmission probe for microliter spectroscopic sampling. DipTip’s tip diameter is only 1.5 mm—the size of a 17-gauge needle. It will fit into all micro centrifuge tubes on the market and is a very useful tool for measuring protein and DNA samples. The diminutive dipping probe can also be used for a dissolution system. Thanks to WPI's proprietary optical design, DipTip is not only four to five times smaller in diameter than any other product on the market, but also costs 50% less. Together with our fiber optic-based spectrophotometers (TIDAS II) or spectrometer modules TIDAS I or CCD (SPECTRAUSB) and light sources (D2H, D2Lite™, and FO-6000™), microliter samples can be analyzed very cost effectively.
To exemplify the performance of the DipTip, Bovine Serum Albumin (BSA) dissolved in a phosphate buffer BSA has been analyzed with a TIDAS II. Absorbance spectra and a calibration curve are shown. Each spectra has been obtained from 50 to 60 µl samples stored in 0.1 mL centrifuge vials.
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DIPTIP Specifications
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DIP-UV |
DIP-NIR |
DIP-UV-SR |
| Tip diameter |
1.5mm |
1.5 mm |
1.5mm |
| Light pathlength |
2, 5, 10mm |
2, 5, 10mm |
2, 5, 10mm |
| Wavelength Range (nm) |
230-1000 |
350-1000 |
200-1000 |
| Sample Volume Required |
20-50 µL
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20-50 µL
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20-50 µL
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| Distance from tip to upper edge of sample window |
7 mm |
7 mm |
7 mm |
| Total length (including handle) |
18 cm
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18 cm
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18 cm
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| Fiber length (from connector to tip) |
1.5 m |
1.5 m |
1.5 m |
| Fiber Optic Connectors |
SMA 905
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SMA 905
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SMA 905
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| Launch fibers (2) NA = 0.22 |
400 µm |
400 µm |
400 µm |
| Return fiber Return Fiber (1) NA = 0.22 |
400 µm
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400 µm
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400 µm
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| Order Numbers |
| DIP-UV |
DipTip for UV/Vis Spectroscopy 10 mm Path |
| DIP-UV2 |
DipTip for UV/Vis Spectroscopy 2 mm Path |
| DIP-UV5 |
DipTip for UV/Vis Spectroscopy 5 mm Path |
| UCK |
Ultrasonic Cleaning Kit |
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