Your privacy is important to us. It is Pam Membranas Seletivas’ policy to respect your privacy regarding any information we may collect from you on thePam Membranas Seletivas website and other websites we own and operate.
We request personal information only when we truly need it to provide you with a service. We do so through fair and lawful means, with your knowledge and consent. We also explain why we are collecting it and how it will be used.
We retain the information we collect only for as long as necessary to provide the requested service. When we store data, we protect it using commercially reasonable measures to prevent loss and theft, as well as unauthorized access, disclosure, copying, use, or modification.
We do not share personally identifiable information publicly or with third parties, except when required by law.
Our website may contain links to external websites that are not operated by us. Please be aware that we have no control over the content and practices of these websites and cannot accept responsibility for their respectiveprivacy policies.
You are free to decline our request for personal information, with the understanding that we may not be able to provide some of the services you have requested.
Your continued use of our website will be considered acceptance of our privacy and personal information practices. If you have any questions about how we handle user data and personal information, please contact us.
The user agrees to make appropriate use of the content and information provided by Pam Membranas Seletivas on the website, including, but not limited to:
We hope this clarifies the matter, and as mentioned earlier, if there’s anything you’re unsure about whether or not you need, it’s generally safer to leave cookies enabled in case you interact with one of the features you use on our website.
This policy is effective as of November 29, 2025, at 9:12 p.m.
For questions, requests, or to exercise your rights under the LGPD:
📧 Email: vendas@pam-membranas.com.br
📞 Phone: (21) 3733-1988
📍 Address: MP Building, Rua Sydney Martins Gomes dos Santos, 52, Unit 01, Cidade Universitária, Rio de Janeiro, RJ.
CHARACTERISTICS OF HOLLOW ULTRAFILTRATION FIBERS:
a) Membranes with a cylindrical geometry, of the hollow-fiber type (Figure 1);
b) Material of the hollow fibers: poly(ether sulfone);
c) Outer diameter of the fibers: between 0.8 and 0.9 mm;
d) Fibers with a selective outer layer;
e) UF fibers exhibit 95.0% effective retention for compounds with a molecular weight greater than 50 kDa;
f) Filtration occurs from the outside to the inside of the fibers;
g) The ultrafiltrated extract flows through the interior of the fibers;
h) Module construction material: weldable PVC;
i) Operating pressure: depends on the extract to be processed in the equipment. The critical pressure for each type of extract must be determined;
j) Maximum operating pressure: 5 bar;
l) Maximum operating temperature: up to 55.0°C;
m) pH: 2.0 to 13.0.
CHARACTERISTICS OF HOLLOW MICROFILTRATION FIBERS:
a) Membranes with a cylindrical geometry, of the hollow-fiber type;
b) Material of the hollow fibers: poly(imide);
c) Outer diameter of the fibers: between 0.9 and 1.0 mm;
d) Fibers with a selective outer layer;
e) Average pore size on the outer surface of the fibers: 0.4 µm (Figure 1);
f) Retention of 99.99% of the microorganisms and suspended solids present in the extract to be processed;
g) Filtration occurs from the outside to the inside of the fibers;
h) The microfiltrate flows through the interior of the fibers;
i) Operating pressure: dependent on the stream to be processed by the equipment. The critical pressure for each type of feed stream must be determined;
j) Maximum operating pressure: 5 bar;
l) Maximum operating temperature: up to 55.0°C;
m) pH: 2.0 to 13.0.
The process with the highest rejection capacity. It removes virtually all dissolved salts and contaminants, producing water of the highest purity.
It applies pressure greater than the solution's osmotic pressure, forcing water to pass through the membrane in the opposite direction of the natural flow, leaving the salts behind.
Seawater desalination, production of ultrapure water for industries (pharmaceutical, semiconductor), and purification of water for consumption.
Exceptional water quality Proven and reliable technology Salt rejection rate exceeding 99% Removal of all contaminantsAn intermediate process between UF and reverse osmosis, with pore sizes ranging from 1 to 10 nanometers. It removes multivalent ions (hardness) and low-molecular-weight organic molecules.
It operates at higher pressures than UF. It separates components based on size and electric charge, allowing monovalent ions to pass through.
Water softening, partial desalination, pesticide removal, wastewater recycling.
Lower energy consumption than RO Preserves minerals (monovalent ions) High rejection of divalent ions Wide range of applicationsSimilar to microfiltration, but with smaller pores (0.01 to 0.1 micrometer), capable of retaining viruses and macromolecules such as proteins.
It uses hydrostatic pressure to force the solvent through the membrane, while high-molecular-weight solutes are retained.
Virus Removal Operation at low temperatures Excellent permeate quality High selectivity