SKU: 73173571740

PALL AP-4438 Acrodisc PSF Syringe Filters with Nylon Membrane - 0.45 µm (50/pkg 200/cs)

Sale price$339.19 Regular price$376.88
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Description

PALL AP-4438 Acrodisc PSF Syringe Filters with Nylon Membrane - 0.45 µm (50/pkg 200/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.

Nylon syringe filters can be used for both aqueous and solvent-based sample filtration applications and show excellent chemical compatibility with esters, bases and alcohols. However, it should be noted that nylon syringe filters are not recommended for sample fluids which are strongly acidic.

Pall provides HPLC certification with these products, ensuring that analytical results will not be compromised by extractable filter materials. Pall membranes are tested for compatibility with common HPLC solvents including water, methanol, and acetonitrile, using established HPLC procedures. In addition, to verify low levels of UV-detectable extractables, samples of the syringe filters are evaluated prior to release.

Acrodisc PSF Syringe Filters feature a large effective filtration area (3.9 cm2) for increased sample throughput, ideal for sample volumes of ≤ 150 mL. Pall Acrodisc PSF Syringe Filters are designed to be fully compatible for use with automated robotic handling systems offering reliable and worry-free operation.

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SKU: 73173571740

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4.3 ★★★★★
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Liv Martin
Natrona Heights, US
★★★★★ 5
Beautiful shoes
Size: 7 Toddler, Color: Tan, Size: 7 Toddler, Color: Tan
Beautiful dressy shoes! I used to get another version of these for size 6 when my daughter was younger, now she’s getting into size 7, I got her a pair of these. They look great on her and she loves them. Hope they will last a while. The size 6 we had were very worn because she loves them so much that she would pick them over all her other shoes.
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Reviewed in the United States on March 16, 2025
D
Verified Purchase
DB
San Leandro, US
★★★★★ 5
Grand daughter likes them, she is 2 1/2 .win win!!
Size: 7 Toddler, Color: Tan
My grand daughter loves these shoes. She is 2 1/2. They are comfortable on her. Her favorite was the white 360 walking shoe but they unfortunately don’t make them in toddler size. (Hint: make them in larger sizes - and why not? ). So I got her these. Stride Rite are good, comfortable shoes for little ones.
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Reviewed in the United States on August 3, 2025
B
Verified Purchase
Brianna LeVasseur
Belleville, US
★★★★★ 3
Could Be Better
Size: 11 Little Kid, Color: Tan
Look cute for a little while, then the toes peel as shown by other reviewers. It’s such a shame because my four year old LOVES the sparkly stars on the toes. I wish they made a more expensive version in a material that wouldn’t look worn so quickly.
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Reviewed in the United States on November 16, 2025
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Wonderful, sturdy shoe
Size: 9 Toddler, Color: Tan
I love this shoe. Unfortunately I ordered a size too small this time, but it really is a great shoe.
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Reviewed in the United States on October 9, 2025
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emily p
Whiting, US
★★★★★ 5
Great boots for fall and winter, but too short for deep snow.
Size: 9 Toddler, Color: Navy
This is the second round of these boots I bought for my kids. They are comfortable for all day at school, like sneakers. Perfect for wet days, feet stay dry and warm. They are not snow boots. We live in Boston and they are not for more than an inch or two of snow. I buy separate true snow boots for snow days (much warmer and taller boots).
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Reviewed in the United States on October 3, 2022

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