Description
Genuine LaMotte Freshwater SpinDisk® Reagent Cartridges (4353-H)
The LaMotte 4353-H is a box of 50 single-use freshwater SpinDisk® reagent cartridges for the WaterLink® Spin Touch® photometer. Each sealed disk contains the precise amount of reagent needed to run a complete series of freshwater tests — no measuring, no titration, no reagent handling.
Simply inject less than 3 mL of sample water into the disk, insert it into your Spin Touch, and press start. In around 2 minutes the photometer completes all seven tests automatically, eliminating operator error and delivering consistent, lab-grade results every time.
The FX104 freshwater series is designed for aquaculture, hatcheries, aquariums, research facilities and any freshwater application with salinity between 0 and 9,000 ppm. For salinity above 17,000 ppm, use the Saltwater SpinDisk (4354-H); for brackish water (9,000–17,000 ppm), use the saltwater disk with LaMotte’s brackish tablet method.
What each disk tests
| Test Factor | Range | Accuracy |
|---|---|---|
| Alkalinity | 0 – 250 ppm (14.0 dKH) | ± 15% |
| Ammonia | 0.0 – 3.0 ppm | ± 0.2 ppm (< 2 ppm), ± 0.4 ppm (> 2 ppm) |
| Hardness | 0 – 500 ppm (28.0 dGH) | ± 15% |
| Nitrate | 0 – 300 ppm | ± 30% up to 125 ppm |
| Nitrite | 0.0 – 2.0 ppm | ± 0.2 ppm |
| pH | 4.5 – 10.0 | ± 0.2 |
| Phosphate | 0.0 – 2.0 ppm | ± 0.2 ppm |
Key details:
- Order code: 4353-H (FX104 Freshwater Series)
- Pack size: 50 single-use disks, individually foil-sealed
- Sample size: less than 3 mL per test
- Test time: approx. 2 minutes for all 7 parameters
- Salinity range: 0 – 9,000 ppm (freshwater)
- Compatible instruments:




