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CAPILLARYFLOW SAND AGENT

Read your sand analysis report in seconds

A free AI tool for golf courses and equestrian facilities. Upload the report from your lab or supplier and see your gradation curve against the recommended range, before you buy a single ton.

Free. A first check only, see the note below.

Sand Agent Example result
Metric or imperialPassing or retainedSaved
Bunker sandArena sand
0%50%100%0.050.10.250.512Particle size (mm)Bunker sand: 0.05 mm, 2.7% passingBunker sand: 0.1 mm, 8.7% passingBunker sand: 0.25 mm, 46.5% passingBunker sand: 0.5 mm, 90% passingBunker sand: 1 mm, 99.8% passingBunker sand: 2 mm, 100% passingArena sand: 0.075 mm, 0% passingArena sand: 0.15 mm, 1.1% passingArena sand: 0.25 mm, 25.4% passingArena sand: 0.5 mm, 88.2% passingArena sand: 1 mm, 99.7% passingArena sand: 2 mm, 100% passing

Two real sands: a bunker sand and a washed arena sand.

FREE AI TOOL

What the Sand Agent does

Reads any report

Lab and supplier sieve analyses, metric or imperial, passing or retained. Or type the values in.

Draws your curve

The numbers become an easy-to-read gradation curve, with Cu and Cc calculated for you.

Compares with the range

Against the USGA greens range or our equestrian range.

Saves every analysis

Compare suppliers, or check how your sand changes over time.

3 STEPS

How it works

Sand Agent step 1: upload a lab report or enter numbers manually

1. Upload your report

Or type in the values from your lab or supplier.

Sand Agent manual entry table with sieve size in mm and retained weight in grams

2. See your gradation curve

Drawn in seconds, with Cu and Cc.

Sand Agent graph comparing a sand sample's particle-size curve with an equestrian reference band

3. Compare and save

Against the range for your use, saved for next time.

FREE, NO SIGN-UP TO START

Try the Sand Agent

Type in or upload your numbers. You add your name and email only when you want to see the results.

WHY IT MATTERS

Why particle size matters

Fine particles fill the pores water needs to drain through, so a few percent of silt and clay can turn a free-draining sand into a wet one. A very uniform sand stays loose; a wide mix packs firm. And sand changes after it's installed, as fines wash in and grains break down.

Bring installed sand back

In Capillary bunkers and arenas, the Capillary Wash Box removes fine particles from the installed sand without removing it, bringing it back towards its original curve.

IN DEVELOPMENT

Coming soon

Sand column next to a water release curve: sand near the bottom holds water, sand near the top dries out

Water release curve

How much water the sand holds at different depths.

Water draining down through a sand layer, timed in millimetres per hour

Hydraulic conductivity

How fast water moves through the sand.

Frequently asked questions about the Sand Agent

Is the Sand Agent free?

Yes. No sign-up to start. Enter your numbers, then add your name and email to see your results.

Which reports can I upload?

Lab and supplier sieve analyses, in metric or imperial, as passing or retained percentages. You can also type the values in.

Which ranges does the Sand Agent compare against?

The USGA recommended range for putting green root zones, used as a reference for bunkers too, and CapillaryFlow's equestrian range.

Does the Sand Agent replace a lab test?

No. It is a first check. Grain shape, firmness, infiltration and chemistry still need an accredited lab.

Ready? Upload your report and see your curve.

It takes a minute, and you only add your email when you want to see the results.

CapillaryFlow solutions are easy to install
A first check only.

The recommended ranges are based on industry experience and research and do not guarantee how a sand will perform. Always confirm results with an accredited soil testing laboratory or your sand supplier before ordering or installing sand. CapillaryFlow accepts no responsibility for decisions made on the basis of the calculator's results.