This is a bundle of narrow variants to the .4mm slit found in our spectrometry kits. These collimation slits provide a very clean beam of light through a .09mm, .12mm .15mm or .18mm slit. They are made with silver nitrate photo emulsion on thin, flexible acetate.
Why would you want these? Well, the short answer is that if you have enough light available, you can use a smaller slit to get higher resolution. A wider slit increases sensitivity by admitting more light, but lowers resolution because spectral lines will be more blurred. Choosing a slit is a balance between these, but if you can increase the light available, you can typically use a narrower slit and get good resolution without losing signal strength.
We make this range of apertures available to allow you to experiment and find the optimal size for your application.
Make sure to handle with gloves as hand oils will affect your spectroscopy.
Bundle Pack includes different sizes at a discounted price!