Berkshire SPX550.004.24, SatPax® 550, Presaturated Polypropylene Meltblown Wiper, 70% IPA / 30% DI Water, 57% Saturation, 9" x 11", Case of 1,200
The Berkshire SatPax® 550 .004 is a presaturated cleanroom wiper built on a polypropylene meltblown nonwoven substrate — 100% synthetic, no cellulose — saturated with 70% isopropyl alcohol (IPA) / 30% deionized (DI) water at a 57% saturation level. Compared to the SPX550.001.24 (71% saturation), the .004 variant delivers a drier wipe with less fluid per pass. This is appropriate when the process requires the disinfection efficacy of 70% IPA but a lower fluid load — for example, on surfaces where excess IPA pooling is undesirable, in applications where faster dry time is required, or where cost per wipe is a priority. The polypropylene meltblown substrate provides excellent chemical resistance, very low extractables, and no cellulose fiber contamination risk.
MTE Solutions stocks the SPX550.004.24 in cases of 1,200 sheets (50 wipes per pack, 24 packs per case). Each wipe is individually sealed to maintain saturation level. For the higher-saturation (71%) version of the same wiper, see the SPX550.001.24. For the 7" x 11" bagged format in a higher case quantity, see the SPX55000836.
Specifications
| Attribute |
Detail |
| Part Number |
SPX550.004.24 |
| Brand |
Berkshire |
| Series |
SatPax® 550 |
| Substrate |
100% Polypropylene Meltblown Nonwoven |
| Saturation Solution |
70% IPA / 30% DI Water |
| Saturation Level |
57% |
| Size |
9 in x 11 in |
| ISO Classification |
ISO Class 5 – ISO Class 8 (Class 100 – Class 100,000) |
| Pack Quantity |
50 wipes per pack (individually sealed) |
| Case Quantity |
1,200 sheets (24 packs) |
| Wipe Type |
Presaturated |
| Application |
Surface decontamination, fast-dry applications, cellulose-free processes, ISO Class 5–8 |
Frequently Asked Questions
What is the difference between SPX550.004.24 and SPX550.001.24?
Both use the same polypropylene meltblown substrate and 70% IPA / 30% DI water solution. The .004.24 has a 57% saturation level — a drier wipe that delivers less fluid per pass and is lower cost. The .001.24 has a 71% saturation level — a wetter wipe that delivers more fluid per pass. Choose the .004.24 when a drier wipe, faster dry time, or lower cost per wipe is the priority; choose the .001.24 when higher fluid delivery per wipe is required.
Does lower saturation affect disinfection efficacy?
The IPA concentration (70%) remains the same regardless of saturation level — both variants deliver 70% IPA to the surface. Lower saturation means less total fluid volume per wipe, which may affect coverage on very large or porous surfaces. For standard hard, non-porous cleanroom surfaces, the 57% saturation level is sufficient for effective decontamination.
Why choose a polypropylene meltblown substrate?
Polypropylene meltblown substrates contain no cellulose fibers, eliminating the risk of cellulose particle contamination. Polypropylene also has excellent chemical resistance and very low extractables, making it appropriate for processes with strict substrate purity requirements.
What ISO cleanroom class is the SatPax 550 rated for?
The SPX550.004.24 is rated for ISO Class 5 through ISO Class 8 environments (equivalent to Federal Standard 209E Class 100 through Class 100,000).
How many wipes come in a case?
Each case contains 1,200 wipes — 50 wipes per pack, 24 packs per case. Each wipe is individually sealed to maintain saturation level.
