8725i injection valve

NegotiableUpdate on 03/14

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

The 8725i injection valve is a six way valve in which the sample is loaded through an embedded needle path in front of the valve. It is made of stainless steel and its important components such as the rotor and rotor seal ring are manufactured by Rheodyne in the United States. Its service life can generally reach 30000 times, with high cost-effectiveness and wide application.

Product Details

8725i injection valveWith MBB (Continuous Flow Sampling) design, it can ensure the accuracy, stability, and reliability of analysis results.

Liquid phase detection application

High performance liquid chromatography HPLC detection scheme for doxycycline hydrochloride

-Sample processing procedure-

Accurately weigh an appropriate amount of doxycycline hydrochloride reference substance, add an appropriate amount of 0.01mol/L hydrochloric acid solution, dissolve by ultrasound, and dilute with 0.01mol/L hydrochloric acid solution to a solution containing approximately 1mg doxycycline hydrochloride per 1ml. Shake well, filter through a 0.45 µ m organic system filter membrane, accurately measure 20 µ L, inject into a liquid chromatograph, and record the chromatogram.

-Chromatographic conditions-

Chromatographic column: C18, 4.6 mm*250 mm， Particle size 5 µ m

Mobile phase: Acetonitrile: Acetate buffer solution=25:75

Wavelength: 280nm

Flow rate: 1.0mL/min

Instrument configuration: 点击图标.png Please click to view the image details

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1. Pressure resistance: 37MPa (5400psi);

2. Quantification loop (optional): 5 μ L, 10μL，20μL；

3. Repeatability:< 0.2% ；

4. Continuously flowing samples;

5. Equipped with a position trigger switch (maximum 25V, 100mA);

6. pH range: 0-14;

7. Maximum temperature: 80 ℃;

8. Diameter of circulation pipeline in millimeters (inches): 0.5 (0.02);