SKU: 83993822357

PALL 4422 Acrodisc Syringe Filters with PTFE Membrane - 0.45 µm, 13mm, male slip luer outlet (100/pkg 300/cs)

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Description

PALL 4422 Acrodisc Syringe Filters with PTFE Membrane - 0.45 µm, 13mm, male slip luer outlet (100/pkg 300/cs)Syringe filters are used in analytical chemistry applications to remove particulate contamination prior to analysis. Filtering a sample prior to sample injection into analytical instrumentation will help protect sensitive parts of the instrument from particulate build up and reduce system downtime. Sample filtration using syringe filters containing 0. 45 m (HPLC) or 0. 2 m (UHPLC) pore size membranes will also extend the life of chromatography columns

Syringe filters are used in analytical chemistry applications to remove particulate contamination prior to analysis. Filtering a sample prior to sample injection into analytical instrumentation will help protect sensitive parts of the instrument from particulate build-up and reduce system downtime. Sample filtration using syringe filters containing 0.45 μm (HPLC) or 0.2 μm (UHPLC) pore size membranes will also extend the life of chromatography columns by preventing particulate from blocking the flow path between the column packing.

PTFE membrane is highly chemically compatible for the filtration of harsh solvents that can destroy other membrane materials. PTFE is a hydrophobic membrane, so it will repel water and is not suitable for the filtration of aqueous solutions.

As well as being suitable for the filtration of organic solvents in applications such as HPLC and UHPLC sample preparation, the hydrophobic nature of the PTFE membrane makes these syringe filters ideal to use in gas filtration or as a moisture barrier in venting applications.

13 mm Acrodisc syringe filters are designed for the filtration of sample volumes up to 10 mL. They feature an effective filtration area of 1.0 cm2 and a polypropylene housing which has excellent chemical compatibility properties. The syringe filters are HPLC certified for low levels of UV-absorbing extractables, preventing spurious peaks on chromatograms, ensuring both accurate and reliable results.

Pall 13 mm Acrodisc syringe filters are available with a standard male slip luer outlet or Pall’s proprietary minispike outlet. The minispike allows for easy handling with a HPLC vial, and offers a reduced hold-up volume, ensuring maximum filtrate recovery.

Typical hold-up volumes:
13 mm, male slip luer outlet:

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SKU: 83993822357

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4.7 ★★★★★
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Musa Sulejmani
New York, US
★★★★★ 5
Sturdy, Beautiful, and Functional
Color: Black
I love this MacBook stand. It sits at the perfect height (my neck doesn’t hurt anymore!), it matches the Space Black finish on the MacBook, and is very sturdy. I considered the 12 south instead of this, and returned it for this instead. Better value and better product. Overall, I highly recommend.
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Reviewed in the United States on February 12, 2025
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Verified Purchase
A. Heisey
Birmingham, US
★★★★★ 5
Fantastic Stand
Color: Gray, Color: Gray
Cooling - I purchased this stand for use in college, primarily so I could raise my laptop to the same height as my primary monitor. While my focus in purchasing this was on raising my laptop, the stand also helps cool the laptop. I have been thoroughly surprised i its effectiveness. Many times my friends and I will be working on homework together running programs such as Microsoft Teams and Mathworks Matlab simultaneously. In doing so, I will have my laptop on the stand so I can use my monitor. While my friends identical college-issued laptops are very, very hot due to the intensive tasks they are completing, mine is, at the most, warm to the touch. The only difference is that I am using the stand, and they are not. The slots in the stand, while not overly large, do aid in cooling the laptop significantly. Build Quality - Prior to purchasing this stand, I saw several reviewers mentioning the finish on the stand, claiming it had an almost gritty quality. After receiving the product, I believe those customers were hoping for a very high level of final finishing. That is not to say that it is not a high quality finish, but if you are expecting it feel like the aluminum lid of a Macbook, it will have a slightly coarser finish than that. The stand has rubber pads on all points it would contact the laptop with. These pads are mounted very securely to the frame, and I am not concerned at all about them falling off. If I would have to guess, they are made of a type of silicone and have shown no signs of wear after 2 months of daily use. They are also present on the bottom of the stand to protect the surface it is set on. The stand itself is constructed of 4mm thick aluminum all around. As such, it is very sturdy. I would be absolutely shocked if a laptop broke one of these stands. I have even used it to hold textbooks temporarily, and it has held them with supreme ease. Color - I purchased the model in the darker gray color. I did not have anything I was trying to match it with. As such, I cannot say whether it will match Apple's Space Gray products, although it looks very reminiscent of it. For reference, my laptop is an HP Elite Dragonfly with a 13.3 inch screen, and my monitor is a 21.5 inch Acer unit.
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Reviewed in the United States on April 10, 2021
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Verified Purchase
E. Chen
Cuba, US
★★★★★ 5
Great minimalist stand
Color: Gray, Color: Gray
Really like the minimalist design of this stand. Quality is top notch with steady material and refined edges. Had to make minor modifications to prevent laptop touching metal edges when putting on with slight angel tilt. Overall very satisfied with the product.
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Reviewed in the United States on September 13, 2025
M
Verified Purchase
Matteo
Natrona Heights, US
★★★★★ 5
Simple upgrade that actually improves your setup
Color: Black
I didn’t expect much from a laptop stand, but this made a noticeable difference right away. It lifts the laptop to a much better eye level, which helps a lot with posture—especially if you’re working for a few hours at a time. The build quality is solid. It’s aluminum, has a bit of weight to it, and doesn’t feel cheap. Once it’s on the desk, it stays in place. The rubber grips hold the laptop securely, and I haven’t had any slipping issues. I’m using it with a MacBook Pro and it fits perfectly. There’s enough space underneath for airflow, and I’ve actually noticed the laptop runs a bit cooler compared to sitting flat on the desk. Overall, it’s a simple product but very effective. One of those small upgrades that you end up appreciating every day.
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Reviewed in the United States on May 5, 2026
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Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
I like it just fine. It’s good and it works for me.
Color: Black
It’s sturdy and I like the design. Seems pretty comparable to every other MacBook stand, but I chose this one for some reason and I’m happy with it. The height is not adjustable, so if you want that find another one.
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Reviewed in the United States on May 6, 2025

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