FLOPAM FO 4000 SHU Equivalent — Cationic PAM Powder Screening for FO 4290 SHU to FO 4650 SHU
ChinaPAM supplies cationic polyacrylamide powder for FLOPAM FO 4000 SHU requirements. Send the exact FO number with its SHU suffix, quantity and destination and we will name the ChinaPAM screening grade, quote current pricing and plan an evaluation. SHU sits in the same SNF table as SH with different viscosities and, for most numbers, a lower bulk density, so the suffix changes the feeder and make-up check.
Supply Route Comparison
Published reference data and the ChinaPAM route for SNF FLOPAM FO 4000 SHU series
Competitor figures are from the archived SNF powder and bead catalogue, table FLOPAM FO 4000 SH & SHU (PDF pages 7 and 8). The printed edition year of this archived catalogue is not confirmed. SNF states these data are given for information only and do not constitute a specification. They are historical indicative values under SNF test conditions, not ChinaPAM specifications and not evidence of current SNF availability.
| Parameter | ChinaPAM Supply Route | SNF FLOPAM FO 4000 SHU series |
|---|---|---|
| Physical form | Cationic polyacrylamide powder | Cationic powder of high molecular weight (SH & SHU table) |
| Grades covered | Three charge-band lanes | FO 4290 / 4350 / 4490 / 4550 / 4650 SHU |
| Charge position | Matched by band, then trialled | Low, Medium and High (SNF scale) |
| Bulk density | Measured on the quoted grade for feeder calibration | SHU 0.85 to 0.70; SH 0.85 for the same numbers |
| Make-up | Per the TDS of the selected grade | 4 g/L recommended, 10 g/L max |
| Dissolution | Measured on the quoted grade | FO 4290 SHU 90 min; other SHU grades 60 min |
| Documents | TDS with the selected grade; COA tied to the confirmed shipment | Catalogue data, stated not to be a specification |
| Packaging | Confirmed in the quotation | 25 kg bags / 750 kg big bags |
Specifications
| Product Form | Cationic polyacrylamide powder |
| Series Covered | FO 4290 / 4350 / 4490 / 4550 / 4650 SHU |
| Low-Charge Lane (FO 4290 SHU) | C8008, with C8003 / C8035 as chain-length check |
| Medium-Charge Lane (FO 4350 / 4490 SHU) | C8001, C8015, with C8003 / C8035 as chain-length check |
| High-Charge Lane (FO 4550 / 4650 SHU) | C8003, C8035, C8004, C8045, C8005 |
| Documents | TDS for the selected grade; COA per confirmed shipment |
| Packaging / Lead Time | Confirmed in the quotation |
Key Features
- SHU kept apart from SH and bare FO grades with the same number
- Charge-band lanes with a chain-length check where the charge is lower
- Feeder recalibrated by mass when moving from an SH assumption
- FO 4490 SHU single-model page kept as the detailed reference
- Quotation, evaluation plan and documents through one enquiry
Applications
- FO 4000 SHU supplier-change qualification
- Feeder and make-up re-check when SH and SHU are both on site
- Charge-band screening on sludge or process water
- Checking a tender line that names an SHU grade
Get a Quote for SNF FLOPAM FO 4000 SHU series Alternative Supply
Tell us your exact FO number with its SHU suffix, quantity and destination. We will name the ChinaPAM screening grade, quote current pricing and set up an evaluation plan.
Related Articles
SHU Grade Selector: Five Grades Beside Their SH Neighbours
Find the exact FO number with SHU on your label. The SH values on the same number are shown so the difference is visible: it is the reason a bare FO number is not enough. Lanes follow the SNF charge label; SNF and ChinaPAM bands are separate qualitative scales that do not convert numerically.
| Exact SNF grade | SNF charge | SHU density; cps at 5 / 2.5 / 1 g/L | SH density; cps at 5 / 2.5 / 1 g/L | ChinaPAM starting lane |
|---|---|---|---|---|
| FO 4290 SHU | Low | 0.85; 340 / 140 / 70 | 0.85; 510 / 230 / 100 | C8008 + C8003, C8035 check |
| FO 4350 SHU | Medium | 0.80; 350 / 140 / 50 | 0.85; 625 / 340 / 140 | C8001, C8015 + C8003, C8035 check |
| FO 4490 SHU | Medium | 0.75; 370 / 150 / 60 | 0.85; 510 / 250 / 90 | C8001, C8015 + C8003, C8035 check |
| FO 4550 SHU | High | 0.70; 350 / 150 / 100 | 0.85; 550 / 260 / 100 | C8003, C8035, C8004, C8045, C8005 |
| FO 4650 SHU | High | 0.70; 250 / 120 / 50 | 0.85; 580 / 280 / 100 | C8003, C8035, C8004, C8045, C8005 |
Three SHU Facts Buyers Can Trace
Identity: SNF lists the SHU grades in its FO 4000 SH & SHU table of high-molecular-weight cationic powder, with charge running Low (FO 4290 SHU), Medium (FO 4350 and 4490 SHU) and High (FO 4550 and 4650 SHU).
Handling: for FO 4350, 4490, 4550 and 4650 the SHU bulk density (0.80 to 0.70) is lower than the 0.85 listed for the SH grade on the same number; at FO 4290 both list 0.85. Every SHU column also shows a lower Brookfield value at 5 g/L than its SH neighbour.
Preparation: all five SHU columns list 4 g/L recommended and 10 g/L maximum; dissolution is 90 minutes for FO 4290 SHU and 60 minutes for the other four. SNF gives viscosities as average indicative values and notes that a viscosity ten times lower can be used when choosing preparation and dosing equipment.
Two Failure Modes to Check Before Bulk Supply
Both come from treating SHU as a spelling of SH.
| Failure mode | Trigger | Symptom | Check |
|---|---|---|---|
| Bare FO number on the enquiry | FO 4550 or FO 4650 is quoted without SH or SHU | Grade with a different bulk density and viscosity is evaluated or delivered | Quote from the full label and keep SHU on the purchase order and COA request |
| SH volumetric assumption | A feeder calibrated on an SH grade is used for an SHU position | Delivered mass differs from the target dose | Recalibrate by weighed discharge for the supplied grade before the trial |
Feeder Check and Same-Sample Evaluation
Set the feeder by weighed discharge on the ChinaPAM grade. Prepare it and the incumbent SHU grade at the same concentration, within the 4 to 10 g/L window, time dissolution and record viscosity.
Dose both in steps on one representative sample with the same mixing and solution age. For FO 4290, 4350 and 4490 SHU, run the charge-led grade and the chain-length check side by side. The lowest stable dose that meets your target selects the grade.
What to Send for a Quotation
The exact grade and quantity are enough to start pricing. These details sharpen the evaluation:
| Input | Why it matters |
|---|---|
| FO number with SHU, or a bag-label photo | Separates SHU from SH and bare grades on the same number |
| Whether SH grades also run on site | Flags shared feeders that need separate calibration |
| Feeder type, make-up concentration and cycle | Sets the calibration and dissolution checks |
| Application, current dose and target result | Baseline and pass mark for the stepped comparison |
| Expected volume and destination | Pricing, packaging and lead time in the quotation |
Documents and Delivery
The applicable TDS is confirmed together with the selected ChinaPAM grade, and a batch COA is tied to the confirmed shipment. Packaging and lead time are confirmed in the quotation for your volume and destination.
Dosage Guide
Start from your current SHU active dose. Recalibrate the feeder by mass for the ChinaPAM grade, prepare it at the same working concentration, and compare stepped doses on the same sample. Fix dose and equipment settings only after the dissolution and viscosity checks agree.
Frequently Asked Questions — FLOPAM FO 4000 SHU Equivalent — Cationic PAM Powder Screening for FO 4290 SHU to FO 4650 SHU
Can ChinaPAM supply for a FLOPAM FO 4000 SHU requirement?
Yes, as cationic polyacrylamide powder. Send the exact FO number with its SHU suffix, quantity and destination and we will name the screening grade, quote current pricing and arrange an evaluation plan.
Is FO 4550 SHU the same as FO 4550 SH?
No. They sit in the same SNF table but the published values differ: FO 4550 SHU lists 0.70 bulk density and 350 cps at 5 g/L, FO 4550 SH lists 0.85 and 550 cps. A bare FO 4550 does not tell you which one you have.
Can I keep the feeder setting I used for SH?
Recalibrate it. For FO 4350 to FO 4650 the SHU bulk density is lower than the SH grade with the same number, so an SH volumetric setting misstates the delivered mass. Set the feeder by weighed discharge for the supplied grade.
Where is the detailed FO 4490 SHU page?
FO 4490 SHU keeps its own exact-model page, linked below. This family page summarises it so the five SHU grades can be compared in one place.
Which documents come with the supply?
The TDS for the selected ChinaPAM grade is confirmed with the grade, and a batch COA is tied to the confirmed shipment. Packaging and lead time are set in the quotation.
Related Products
Trademark notice. SNF FLOPAM FO 4000 SHU series 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 separately branded ChinaPAM grades 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.