Ventilation cabinet supporting components

1. The performance of PP sink water pipes must comply with the requirements of GB/T 14152-2001, and all performance must meet or exceed the following requirements:

(1) The test results for soluble lead, soluble cadmium, soluble chromium, and soluble mercury are qualified.

★ (2) Drop hammer impact test (0.5Kg, 0.5m): TIR ≤ 10%, the test result is qualified.

2. Sink

Laboratory sinks/cup sinks, as important accessories in laboratories, are often paired with faucets and can be used for cleaning laboratory equipment, preparing solutions, soaking experimental samples, and other purposes. Paired with PP water storage device and PP drainage hose to prevent siphon phenomenon.

(1) Material: All materials are made of high-quality PP new materials, with no return of materials. Safe and environmentally friendly, no harmful substances volatilize (no odor), will not pollute the air in the experimental environment, and will not endanger the physical health of experimental personnel.

(2) Adopting injection molding technology, the wall thickness is strengthened, the load-bearing capacity is strong, the overall flatness is good, and it is highly compatible with the experimental table without deformation or delamination due to the load-bearing liquid.

(3) The design of the tilt angle at the bottom of the sink is reasonable, which can ensure smooth drainage and prevent the vessels from tipping over and breaking when standing at the bottom of the sink.

(4) The sink needs to be equipped with a lifting cage for filtering impurities at the water outlet to solve the problem of impurities blocking the pipeline and making it difficult to clean.

(5) Formaldehyde release amount: In an environmental chamber with a temperature of 23 ℃ and a relative humidity of RH50%, the equilibrium release was carried out for 192 hours. The gas extraction test results showed that no formaldehyde release amount was detected, and the test results met the requirements.

(6) ★ Ball indentation test: The product is tested according to GB/T 3398.1-2008 Plastic Hardness Determination Part 1: Ball indentation test standard. Two samples are tested together, with a total thickness of about 7.2mm and a ball indentation of 370N.

(7) Temperature resistance test: After being placed at minus 40 ℃ for ≥ 96 hours, the product remains unchanged. The product remains unchanged after being placed at 100 ℃ for ≥ 96 hours.

3. Dragon head

The laboratory faucet has obtained China's water-saving product certification, achieving high standards of energy conservation and environmental protection. The water-saving certification conducts multidimensional testing on the product's flow uniformity, water pressure resistance, mechanical properties, and valve core sealing performance.

Production process requirements: Adopting forging technology (non casting, commonly known as sanding), the product is sturdy, dense, and durable.

(1) Material: The main material is made of high-quality copper, which has good toughness and is not easy to break.

(2) Coating: The surface is coated with high brightness epoxy resin, which is corrosion-resistant and resistant to ultraviolet radiation.

(3) Filtering device: In order to extend the service life of the faucet and ensure the use of experimental water, a plastic filter screen is installed at the water inlet of the faucet to prevent impurities from entering the faucet and reduce the probability of ceramic valve core wear.

(4) Knob/elbow handle: Made of high-density PP (HDPP), non ABS, resistant to strong acid and alkali corrosion.

(5) The product is sturdy and durable, and according to the testing method of GB/T 230.1-2018, the average Rockwell hardness of the product reaches 39. It must comply with the Rockwell hardness test of GB/T 230.1-2018.

(6) Antibacterial performance: According to JC/T897-2014 standard, it is required to detect ≥ 12 types of bacteria with a detection value of ≥ 99.99%, including Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, etc.

(7) ★ Corrosion resistance: According to the GB/T 4334-2020 standard, intergranular corrosion is detected in the presence of slight boiling

After continuous corrosion in a 16% copper sulfate solution for 16 hours, the sample was bent at 90 ° and no intergranular corrosion cracks were observed under a 10 × magnifying glass.

(8) Strength: The body strength of the pipe fittings should withstand 15 times the nominal pressure, maintain the pressure for 15 seconds, and there should be no leakage or structural damage. The test pressure is 2.4MPa, and the pressure is maintained for 15 seconds without any leakage or structural damage.

(9) ★ Moisture and heat resistance: Place the sample in the test chamber, turn on the heating power to reach a temperature of (25 ± 2) ° C, start humidifying after 1 hour to reach a relative temperature of (95 ± 2)%, maintain for 120 hours, and then let it recover at room temperature for 2 hours. The sample should not change after testing.

(10) Sealing: Pipe fittings used for liquid media should be able to withstand no leakage at a pressure of 0.6 MPa. No leakage at 0.6MPa air pressure.