Vertical: Pressure Washing · Nav: xJet Batch Mix · Entry: SmartScope → PW Tools
The xJet Batch Mix Calculator tells you exactly what to put in the tank before you pull up to a job. You pick your xJet tip and target surface strength — the calculator works backward from the pull ratio to tell you how many ounces of SH to add and how much water to fill to. This is a reference tool, not an estimating tool — there is no insert button. Use it on the truck or in prep.
Open it #
From inside a Pressure Washing estimate (or from the PW Tools menu), tap the SmartScope button to open SmartScope — PW. Tap xJet Batch Mix Calculator. The subtitle describes the core calculation: “Pull ratio → batch concentration + oz of SH to add.”
Select your xJet tip #
In the xJet Tip section, choose your tip from the picker. Each tip has a fixed pull ratio built in:
- #1 Tip (White) — lowest dilution, highest on-surface strength
- #2 Tip (Yellow) — standard all-purpose tip (default)
- #3 Tip (Red) — more dilution
- #4 Tip (Black) — highest dilution, lowest on-surface strength
- Custom Ratio — enter your own pull ratio in the field that appears
The pull ratio for the selected tip is displayed below the picker. The footer explains the mechanic: “Pull ratio = parts of water mixed per 1 part batch at the nozzle. Higher ratio = more dilution.”
Set the target surface strength #
In Target Strength at Surface, pick the surface you’re treating: Vinyl Siding, Roof Soft Wash, Concrete / Flatwork, Wood / Deck, or Custom. Each preset loads a recommended on-surface SH percentage. To use a different target, tap the percentage display and enter your own value in the override field.
Enter batch tank details #
In Batch Tank, enter three values: the SH concentration you’re working with (Source SH %, default 12.5), your tank size in gallons, and optionally your chemical cost per gallon. The footer reminds you: “Typical PW suppliers sell SH at 10–12.5%. Enter your actual concentration.” Getting this right is what makes the oz-of-SH result accurate.
Read the formula #
If the combination is achievable, the Batch Mix Formula section shows your four numbers: Required Batch % (the concentration needed in the tank), SH to Add (ounces), Water to Fill (to reach tank size), and Chemical Cost / Batch (when cost is entered). The Result section summarizes the output.
If the combination isn’t achievable — for example, a high-dilution tip trying to hit a high on-surface strength with low-concentration SH — a Warning section appears: “Not achievable. Use a lower pull-ratio tip, reduce target %, or use higher-concentration SH.” Switch to a lower-numbered tip, adjust the target, or check your SH concentration and try again.
