Domestic single flame atomic absorption spectrometerFeatures:

1. Light source

2. Stable and reliable baseline stability is a basic indicator for assessing an instrument, and baseline stability determines a series of operating states of the host, such as noise, sensitivity, repeatability, etc.

3. High energy: It can achieve full transmittance, so your hollow cathode lamp can be used for more than one-third of the time, greatly saving consumables and procurement costs.

4. Imported components improve instrument performance: imported original photomultiplier tubes and imported original gratings.

5. USB interface: The domestic atomic absorption spectrometer is equipped with a USB interface, which is suitable for various types of computers and supporting office equipment, reflecting the forward-looking and compatibility of the instrument.

6. Multiple technologies: Our company has multiple countries in the manufacturing of atomic absorption spectrometers, such as high-performance hollow cathode lamps, glass high-efficiency atomizers, hydride generators, etc.

7. Technology *, stability, durability

We useDomestic single flame atomic absorption spectrometerWhat spare parts are available? So what are the requirements for these spare parts? Let's take a look together below.

Spare Part 1: Atomic Absorption Hollow Cathode Lamp

When a voltage of 200V-500V is applied between the two poles, glow discharge occurs. Under the action of an electric field, electrons collide with carrier gas atoms on their way to the anode and ionize them, releasing secondary electrons and increasing the number of electrons and positive ions to maintain discharge. Positive ions obtain kinetic energy from an electric field. If the kinetic energy of positive ions is sufficient to overcome the lattice energy of the metal cathode surface, atoms can be sputtered out of the lattice when they collide with the cathode surface. In addition to sputtering, heating the cathode also causes thermal evaporation of surface elements. The atoms sputtered and evaporated enter the cavity, and then collide with electrons, atoms, ions, etc. to be excited, emitting resonance radiation characteristic of the corresponding elements.

① Be careful not to reverse the polarity.

② To stabilize the luminous intensity of the lamp, preheat it for 10-30 minutes at the operating current.

③ If the lamp is not used for a long time, it should be ignited regularly and preheated for 1 hour under working current.

④ If the lamp is left unused for a long time and there are impurities inside, the reverse connection method can be used to remove the gas. Reverse the electrode and light it with high current for 30 minutes

Spare Part 2: Atomic Absorption Graphite Tube

To achieve ideal atomization conditions, there are four requirements for graphite tubes:

a. The material for manufacturing graphite tubes must be graphite with high uniformity, high strength, and high density.

b. The geometric dimensions of graphite tubes should be reasonable and require precision machining to ensure machining accuracy and size *.

c. The specific resistance value of graphite tubes has corresponding requirements for different instruments, ensuring that it matches the specific resistance value required by the instrument. At the same time, for mass-produced graphite tubes, the uniformity of their specific resistance value must be ensured.

d. Like the material, shape, and specific resistance of graphite tubes, their surface characteristics play a decisive role. To prevent atomic penetration, diffusion loss, improve sensitivity, enhance oxidation resistance, and extend lifespan, a pyrolytic coating is applied to the surface of graphite tubes, or compounds such as molybdenum, tungsten, tantalum are impregnated to form metal carbides.