An infrared quartz cuvette, also referred to as an absorption tank or sample cell, is used to contain reference liquid or sample liquid. It is utilized in a spectral analysis instrument for the quantitative and qualitative analysis of a given substance. The classification of cuvettes is dependent on the wavelength range it utilized, with three distinct series emerging: the visible light series (also known as the glass cuvette), the ultraviolet-visible light series (also known as the quartz cuvette), and the infrared series (also known as the infrared cuvette).

It is imperative that, when in operation, the two transmittance surfaces are aligned in parallel and situated vertically within the frame. This configuration ensures that the incident light is maintained at a perpendicular angle relative to the transmittance surface, thus avoiding any potential reflection losses and guaranteeing a fixed optical path. The infrared cuvette is typically cuboid in shape, with its lower surface and two lateral sides composed of frosted glass. The remaining two lateral sides are constituted by light-transmissive surfaces, crafted from fused optical glass through the melting and gluing of glass powder at elevated temperatures.

Common physical properties of infrared quartz cuvette

1. The cuvettedisplays high mechanical strength, robust thermal stability, and remarkable adhesive strength, capable of withstanding pressures in excess of several atmospheres.

2. The cuvetteuses highly precise optical processing technology, with an exceptionally excellent optical performance of the light transmitting surface, exhibiting an error rate of less than 0.3%.

3. The use of high-quality quartz glass ensures the absence of both bubbles and stripes, while the transmittance of the quartz cuvette exceeds 80% at a wavelength of 200 nm.

Infrared quartz cuvettes used in spectral analysis tests are single-use items?

The rapid development of spectral analysis instruments has led to the emergence of a range of new cuvettes, including micro, semi-micro, fluorescence and other types, which requires a greater level of care and attention with regard to its use, maintenance and cleaning. Generally cuvettes are provided for a single use only. However, sometimes they can be reused in order to save costs, and their cleaning is possible through  dissolution and neutralization reaction with a variety of reagents. The objective of the cleaning process is twofold: firstly, to avoid any damage to the structure or light transmission performance of the cuvette; secondly, to achieve the comparable cleanliness to that which would be achieved prior to utilization by neutralization and dissolution.