FLOPAM FA 920 SD / SHD Equivalent Screening

A confirmed FLOPAM FA 920 SD or FA 920 SHD enquiry gets a nonionic PAM powder selection route from ChinaPAM, starting with ChinaPAM grade 1003. That is the commercial answer, and it does not depend on anything further being proved first. What follows on this page is the evidence behind it, the gap that remains open and the test that closes the gap.

ChinaPAM grade 1003 is the starting route because it is the single grade in the current 26-grade ChinaPAM table that shares both the ion type and the physical form of the target: nonionic, and powder. Of the other 25 grades, 12 are cationic and 13 are anionic, so none of them can open a nonionic powder enquiry without changing the chemistry the buyer asked for. The ion-type and form gate is applied before anything else precisely so the route cannot drift into a different polymer family on the way to a quotation.

No exact equivalence, interchangeability or performance match is claimed for 1003 against either suffix. On the ChinaPAM scale 1003 is carried at Low molecular weight; both target columns carry a Very High molecular weight descriptor on the SNF 2007 scale. Those two descriptors come from two independent supplier scales with no numeric calibration between them, so they cannot be converted into one another and ChinaPAM does not claim 1003 sits in the SNF Very High band. The molecular-weight question is settled by a controlled test on your own feed, not by reading the two words as if they were measurements.

There is also no same-ion-type backup to hold in reserve: 1003 is the only nonionic powder in the current table, so a second nonionic powder route does not exist to be offered. That is a limitation of the published table and nothing more. It is not evidence that ChinaPAM cannot supply the requirement, and it does not stop an enquiry from being quoted and sampled.

The evidence for this page is one page of one historical document: SNF Catalogue 2007 Poudres, PDF page 30, and within it only the FLOPAM FA 920 SD and FLOPAM FA 920 SHD columns. Nothing on this page is taken from a search snippet, a resale listing or a later redrawing of that table.

SNF states these values are average and given as an indication; they do not constitute a specification. They are historical 2007 indicative catalogue data recorded under SNF test conditions. They are not ChinaPAM specifications and are not evidence of current SNF availability or of a current SNF specification.

The complete suffix carries procurement weight, so it is kept intact through the whole enquiry. On the source page the bare FA 920 column and the HD column are recorded at High molecular weight with a 120-minute dissolution row, while the VHM column is recorded at Ultra High molecular weight with a 300-minute row. Those are different numbers belonging to different columns. An enquiry shortened to FA 920 can therefore be answered against a row the buyer never intended, which is why a photograph of the bag label is worth more here than a retyped grade name.

What the letters SD and SHD stand for is not stated anywhere on the source page, and ChinaPAM does not guess. The two columns do carry different indicative viscosity curves, which is enough reason to treat the suffix as load-bearing even while its meaning stays unknown.

Every claim on this page is placed in one of four states, so a buyer can see which statements rest on evidence and which do not. The states are published rather than implied.

The complete FA 920 SD or FA 920 SHD label, or a photograph of the bag label, is enough on its own to open the enquiry. Everything else below sharpens the route and the test plan rather than gating the reply.

Useful inputs: the complete grade label or the incumbent TDS; the application duty and where in the process the polymer is dosed; the present active-dose basis, stated as active polymer rather than as solution volume; the make-down concentration, mixing arrangement and maturation time currently used; the water or feed conditions, including solids, temperature and pH; the separation target you are judged against; and the volume and destination.

Dose stated as solution volume rather than active polymer can produce a misleading first comparison, because two products made down at different strengths are then compared at different real doses. Normalising on active mass before the first jar is poured removes that error at no cost.

Both of these come directly out of the source data for this grade family rather than from general advice, and both have a cheap verification step.

Failure 1 source basis: page 30 gives bare FA 920 and FA 920 HD a High-MW / 120-minute row, SD and SHD a Very-High-MW / 240-minute row, and VHM an Ultra-High-MW / 300-minute row.

Failure 2 source basis: D0 section 3.3 states ChinaPAM powder preparation is 1–3 g/L recommended, 5 g/L maximum and no more than 60 minutes at working concentration.

The molecular-weight label gap cannot be closed by argument, so it is closed by test. Prepare each product separately under its own applicable preparation procedure — the incumbent under its instructions, the ChinaPAM grade under its own — and then compare them on the same actual feed at a controlled active dose rather than at a matched solution volume.

Record solution quality and make-down behaviour, settling or clarification rate, supernatant or filtrate clarity, floc strength under the shear your process actually applies, and the full dose-response curve rather than a single point. Run the SD intent and the SHD intent as separate lines whenever both are in scope, because the source curves for those two columns are not interchangeable.

A dose-response curve matters more than a single pass or fail here: it shows whether a route has usable headroom at the dose your plant can afford, and it can reveal that a grade works at a dose outside the range first tried. Bulk supply is fixed after that curve exists, not before.

ChinaPAM runs its own polyacrylamide production and quality-control laboratory, and the trust assets referenced on this page are company- and process-level ones. You can review the manufacturing and quality position on the supplier profile and the document position on the certifications and compliance page.

No exact-grade certification is implied for FA 920 SD or FA 920 SHD, and no drinking-water approval is carried onto this page from the PWG or SEP grades, which are a separate family with their own owner pages. Any certificate that applies to a quoted ChinaPAM grade is identified against that grade at quotation rather than assumed from a company-level document.

The quotation confirms the selection route, sample arrangements, current packing and delivery, each against your selected grade, destination and order conditions. Applicable document set and TDS availability are confirmed with the quoted ChinaPAM grade; a batch-specific COA is tied to a confirmed shipment only.

To start: use Get Price on the enquiry form, Request a Sample, WhatsApp or Email, and send the complete SD or SHD label — or a photo of the bag label. That alone is enough to open the enquiry; the duty and dosing inputs listed above can follow.