FLOPAM AN 956 VHM Equivalent — High Charge Ultra High MW Anionic PAM
FLOPAM AN 956 VHM is a high charge, ultra high molecular weight anionic powder and the entry with the highest Brookfield viscosity at 1.0 g/l in the nine-column SNF VHM table (350 cps vs 300 cps for AN 934 and AN 945). It also exists in a separate SH series at very high molecular weight — not ultra high — with different properties. ChinaPAM supplies a high-charge, very-high-molecular-weight anionic PAM powder route for AN 956 VHM duty. If your bags read AN 956 SH, the suffix matters: that is a different product on a different page of the same catalogue. If your bags read AN 945 or AN 945 VHM, see the [AN 945 equivalent](/products/brand-equivalents/flopam-an-945-equivalent) or [AN 945 VHM equivalent](/products/brand-equivalents/flopam-an-945-vhm-equivalent).
Head-to-Head Comparison
Side-by-side data: Our equivalent vs SNF FLOPAM AN 956 VHM
| Parameter | Our Equivalent | SNF FLOPAM AN 956 VHM |
|---|---|---|
| Type | Anionic PAM powder | Anionic PAM powder |
| Charge Density | High charge band (our scale) | High (SNF 2007 p.34) |
| Molecular Weight | Very high MW (our scale) | Ultra High (SNF 2007 p.34, VHM suffix) |
| Recommended concentration | 1–3 g/L | 3 g/l (SNF 2007 p.34) |
| Maximum concentration | Max 5 g/L | 5 g/l (SNF 2007 p.34) |
| Dissolution time | ≤60 min at working concentration | 90 min at 5 g/l and 25°C (SNF 2007 p.34) |
| Suffix caution | Grade reselected if suffix is SH or other non-VHM | AN 956 SH is Very High MW (p.36), not Ultra High MW — a separate product |
Specifications
| Our Product | High-charge, very-high-MW anionic PAM powder — CNfloc 1054V band |
| Positioned Against | SNF FLOPAM AN 956 VHM |
| Type | Anionic (partially hydrolysed polyacrylamide) |
| Their Charge Density | High (SNF published scale, Catalogue 2007 p.34) |
| Their Molecular Weight | Ultra High (SNF published scale, VHM suffix) |
| Their Rec. Concentration | 3 g/l (SNF published) |
| Their Max. Concentration | 5 g/l (SNF published) |
| Their Dissolution Time | 90 min at 5 g/l, 25°C (SNF published) |
| Our Preparation | 1–3 g/L recommended; max 5 g/L; ≤60 min at working concentration |
Key Features
- High-charge, very-high-MW anionic PAM supply route confirmed for AN 956 VHM duty
- AN 956 VHM is the highest-viscosity entry at 1.0 g/l in the nine-column table (350 cps vs 300 cps for AN 934 and AN 945)
- AN 956 SH is a separate product at Very High MW — different suffix, different molecular weight band, different properties
- Supply route confirmed; jar test on your own water validates fit before volume order
- Current TDS and MSDS available; batch-specific COA with every shipment
Applications
- Procurement for processes specifying FLOPAM AN 956 VHM or a high charge, ultra-high MW anionic powder
- Substitution screening where a buyer-specified AN 956 VHM requires a supply route from an alternative manufacturer
- Process water treatment where the polymer specification calls for high charge density at ultra-high chain length and the 350 cps / 1.0 g/l viscosity distinguishes AN 956 from adjacent high-charge VHM grades
Get a Quote for the SNF FLOPAM AN 956 VHM Equivalent
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What SNF Publishes for AN 956 VHM
The figures below are from SNF SAS Catalogue 2007 Poudres, page 34, covering the FLOPAM AN 900 VHM series. The catalogue states the data are given for information only and do not constitute a specification. Verify against a current data sheet from SNF or its distributor.
AN 956 VHM is one of three High charge grades in the nine-column table (alongside AN 934 and AN 945). All three publish the same Brookfield readings at 5.0 g/l (2000 cps) and 2.5 g/l (1000 cps). The only published quantitative difference between them is at 1.0 g/l: AN 956 gives 350 cps, AN 934 and AN 945 give 300 cps. Make-up conditions are 3 g/l recommended, 5 g/l maximum, 90 minutes dissolution at 5 g/l and 25°C — the same as six other grades in the table.
AN 956 also appears in the SH suffix series on page 36 of the same catalogue, where it is described at Very High molecular weight rather than Ultra High. The two entries share the grade number but differ in suffix, molecular weight band, and Brookfield profile. The suffix on your bags determines which page's data applies.
| Property | AN 956 VHM | AN 945 VHM | AN 934 VHM |
|---|---|---|---|
| Charge density | High | High | High |
| Molecular weight | Ultra High | Ultra High | Ultra High |
| Brookfield @5.0 g/l (cps) | 2000 | 2000 | 2000 |
| Brookfield @2.5 g/l (cps) | 1000 | 1000 | 800 |
| Brookfield @1.0 g/l (cps) | 350 | 300 | 300 |
| Recommended concentration | 3 g/l | 3 g/l | 3 g/l |
| Maximum concentration | 5 g/l | 5 g/l | 5 g/l |
| Dissolution time (5 g/l, 25°C) | 90 min | 90 min | 90 min |
| Storage temperature | 0–35°C | 0–35°C | 0–35°C |
| Shelf life | 24 months | 24 months | 24 months |
Our Supply Route and How to Confirm Fit
ChinaPAM supplies a high-charge, very-high-molecular-weight anionic PAM powder (CNfloc 1054V band) for AN 956 VHM duty. We do not claim the products are identical or interchangeable without testing.
A jar test on your own feed water at several dose rates is the correct verification step. At high charge density, use a dose ladder to find both the effective dose and the upper limit where charge reversal affects settling or clarity. Compare against your current AN 956 VHM supply. Our preparation conditions are 1–3 g/L recommended, max 5 g/L, dissolution ≤60 min at working concentration.
Request a trial sample with your water quality parameters. We will provide current TDS and MSDS plus batch-specific COA. Once the trial confirms performance, we confirm supply grade and batch availability for production quantities.
Dosage Guide
SNF publishes AN 956 VHM at 3 g/l recommended and 5 g/l maximum make-up concentration, with 90 minutes dissolution at 5 g/l and 25°C (Catalogue 2007 Poudres, page 34). At high charge density, overdosing carries a risk of charge reversal; establish the operating dose window by jar test rather than transferring a rate from a lower charge grade. Our preparation parameters are 1–3 g/L recommended, max 5 g/L, dissolution ≤60 min at working concentration.
Frequently Asked Questions — FLOPAM AN 956 VHM Equivalent — High Charge Ultra High MW Anionic PAM
Do you have a supply route for FLOPAM AN 956 VHM duty?
Yes. ChinaPAM supplies a high-charge, very-high-molecular-weight anionic PAM powder route for AN 956 VHM duty. Confirm fit by jar test on your own water before placing volume orders.
What makes AN 956 VHM different from AN 934 VHM and AN 945 VHM if all three are "High" charge?
All three grades are published at High charge and Ultra High molecular weight on page 34 of SNF Catalogue 2007 Poudres. Their Brookfield readings at 5.0 and 2.5 g/l are identical within the precision of the table (AN 934 and AN 945 both show 2000 and 1000 cps; the same values appear for AN 956). The distinguishing figure is at 1.0 g/l: AN 956 publishes 350 cps versus 300 cps for AN 934 and AN 945. That 50 cps difference at dilute concentration is the only published quantitative distinction between the three in this table.
What is AN 956 SH and how is it different from AN 956 VHM?
AN 956 SH is documented on page 36 of SNF Catalogue 2007 Poudres in the Very High molecular weight series. AN 956 VHM is on page 34 in the Ultra High molecular weight series. Same grade number, different suffix, different molecular weight band, different viscosity values. If your bags say AN 956 SH, the data on this page do not apply.
Is there a re-stabilisation risk when dosing high-charge anionic polymers?
At high charge density, overdosing can reverse the surface charge of the colloid — the excess anionic polymer adds negative charge back to a colloid whose charge has already been partially neutralised. This is a general characteristic of high-charge anionic dosing, not specific to AN 956 VHM. Establish the effective dose window by jar test with a dose ladder rather than transferring a rate from a lower charge grade.
Does this page apply if my bags say AN 956 with a suffix other than VHM?
No. AN 956 appears in the VHM and SH suffix series with different molecular weight bands and different properties. Check the full grade string. If you have AN 956 SH, that product is documented on a separate page of the same SNF catalogue.
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Trademark notice. SNF FLOPAM AN 956 VHM and all other third-party product and brand names on this page are trademarks or registered trademarks of their respective owners. Henan Jinghua New Material Technology Co., Ltd. is not affiliated with, endorsed by, sponsored by or authorised by those owners, and no such relationship is implied. Those names are used here for the sole purpose of identifying the products our grades are compared against, which is necessary to describe what we supply. Our products are independently manufactured and are not licensed copies. Grade descriptors quoted for third-party products are taken from each manufacturer’s own published literature and follow that manufacturer’s own scale; we do not publish figures those manufacturers do not publish. Performance on your process should be confirmed by jar test or CST test before any change of supply.