HPLC Preparative Column 20*200mm, 10μ, Semi-Prep by uHPLCs

Taking basket strainers as filter elements, basket strainers are used to filter out particulate impurities from liquids and gases to protect liquid pipelines such as seawater, fuel oil and slurry pipelines, gas pipelines such as natural gas and argon pipelines, and fittings downstream.

Material: stainless steel, carbon steel, or customized.
Large screen area ensures efficient filtration with low pressure drop.
Remove large particles, clean fluids and gases, and protect key devices.
Easy to disassemble and clean, reusable.

Features and Applications:

– Strong polarity allows for both positive and negative use, and amino functional groups provide retention allowing analysis of polar compounds under normal phase elution conditions

– Can analyze organic compounds in monosaccharides and polysaccharides/olefins/aromatic hydrocarbons with acetonitrile and water

– In low pH buffers, the amino phase becomes weakly anion-exchangeable, allowing the separation of some negatively charged molecules

Parameters

Parameters:
Bonded phase: aminopropyl
Particle size: 3μm, 5μm, 10μm
Aperture: 120Å
Specific surface area: 320m²/g
Carbon loading: 4%
Sealing: yes
pH stability: 2.0 to 8.0

5-Features of HPLC Column From uHPLCs

High precision

The overall design of the RS-WS-*-2-* temperature and humidity sensor is a closed structure, which effectively blocks the contact between the circuit board and the external environment. The built-in probe effectively prevents the interference of sand, dust, and wet weather. The whole meets the requirements of the IP65 protection class.

Wide range

The temperature measurement range of RS-WS-*-2-* temperature and humidity sensor are minus 40 degrees to 120 degrees, and the humidity range is 0~100%RH, which can meet the requirements of most users. Other measurement ranges can be achieved by replacing the probe.

Cheap price

uHPLCs is a professional OEM manufacturer, has been engaged in temperature and humidity sensor production for decades, and has a complete production line and patented technology. Our service tenet is to use professional technology to provide users with high-quality and cheap price sensors.

Long use life

The RS-WS-*-2-* temperature and humidity sensor can be used for 5 years in a normal environment, and our company provides buyers with a two-year warranty. It can be used in the outdoor environment for a long time. It is an industrial-grade temperature and humidity sensor.

Delivery fast

We have huge production lines and warehouses, which can quickly supply goods to agents at home and abroad. Large In-Stock, and we guarantee delivery within 24 hours after payment.

Application

The Usage of NH2 Column
The bonding functional group amino of the NH2 column is easier to hydrolyze than the C18 and C8 groups. First of all, you should know the short service life for the NH2 columns, especially in reversed-phase conditions. The lower the pH value, the more likely hydrolysis will occur. The higher the proportion of water in the mobile phase, the more likely hydrolysis will occur. Therefore, it is important to clean and keep the NH2 column in organic solvent after use or when preparing for long storage.

When using the NH2 column for acid analysis (sugar analysis), the presence of acid implies the presence of protons. Protons may protonate the slightly negatively charged amino functional groups, which may cause a change in retention properties or a decrease in column efficiency for some analytes after the column has been used for some time. It is recommended that the column be rinsed with a 50:50 v/v acetonitrile-water solution containing 0.5-1.0% NH3 at 5-10 times the column volume. After rinsing, wash off the excess ammonia with a mobile phase that does not contain a base. A slight addition of ammonia (e.g., 0.1%) to the mobile phase is recommended for the analysis of such acidic analytes.