Plain Lab · logbook
Water Treatment Log
Sixty water treatment readings ruled into six columns, pH, chlorine and turbidity each with its own place, and twenty-nine lined pages for the action a number alone cannot explain.
Price
from Rp 58.000
Softcover, French link sewing. Printed and sewn to order.
Ships in 6–14 business days · 7-day returns
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Every cover and binding option is quoted when you order.
Specification
- Type
- Logbook
- Trim
- 148 × 210 mm · 5.827 × 8.268 in
- Pages
- 100
- Leaves
- 50
- Sheets
- 25
- Signatures
- 5 × 20pp
- Spine
- 5.72 mm
- Paper
- white
- Ruling
- lined
- Ruling pitch
- 7.14 mm · 20.25 pt · 9/32 in
- Rows per page
- 24
- Dating
- Undated
Build it
Rp 58,000
Sixty pages, six columns: date, pH, chlorine, turbidity, action, initials. Three readings side by side rather than scattered across a shared notebook, so a rising turbidity trend shows itself against a chlorine reading that is holding steady, not against a page turn.
The remaining twenty-nine pages are ruled college, twenty-four lines a page, and carry what a column cannot: which valve was adjusted, who was called when a reading looked wrong, what the lab said about a retest.
The book prints no acceptable range for pH, chlorine or turbidity. Those limits are set by the standard your supply is regulated under, they differ by jurisdiction and by source, and a number printed here could tell an operator a bad reading was fine. Write your limits on the inside cover from your own permit, not from this page.
What is inside
- Log
- 60pp
- Six columns side by side, so a turbidity trend shows against a steady chlorine reading, not a page turn.
- Notes
- 29pp
- College-ruled, for the valve adjustment or retest a column cannot carry.
- Reference
- 6pp
- Conversion tables computed from definitions, plus emergency numbers checked against two independent sources.
- Last leaf
- 1pp
- A pen test page, printed on purpose so it is not lost to one anyway.
In every book
The same six pages open every book: your details, who to call, the signs to point at when you have no shared language, and the map. They sit at the front because the moment you need them is not the moment to be flicking through.
- How to use it
- One page describing this book, not a different one.
- This book belongs to
- One page for your name and number, so a book that goes missing can come back.
- My details
- Blood group, allergies, who to call. Written once, carried everywhere.
- Emergency numbers
- Forty countries, taken from Wikidata property P2852 (CC0), agreed across two sources, every row carrying its QID. Numbers change and a book does not — verify locally on arrival.
- Point at this
- A pictogram grid captioned in English above and Indonesian below, for when there is no shared language.
- World map
- Natural Earth 110m, public domain, equirectangular, with UTC hour meridians computed from the projection rather than from a timezone database. For orientation and for pointing at, not a navigation chart.
- Conversion tables
- Computed from definitions — 25.4 mm to the inch — and not copied from anywhere, so every row can be checked by anyone holding the book.
- Pen test leaf
- The last page, printed for it on purpose. Every notebook is used this way; printing it deliberately is cheaper than losing the last leaf to it by accident.
The film
Page by page
A vertical film from our own bench — this page contacts nobody's server to play it, and downloads nothing until you press play.
What is inside this book?
The PDF of this book.
We do not sell the design or the PDF. Download it free, with no conditions at all, not even tracking. What we sell is the book, a real object that is genuinely useful and can help your life.
Download PDF PDF · 100 pages · 0.4 MB
Made at the Hibrkraft bindery, Bogor · about the maker
Try the ruling on paper first
The same ruling exists as a free, ready-to-print sheet. Print one, write on it, and decide whether the pitch suits your hand before you order the book.
College Ruled Paper, 7.1 mmFree PDF · 5 paper sizes
Books that sit alongside it
- Boiler Operation LogWorks alongsideshares field-work
- Cold Chain Temperature LogWorks alongsideshares field-work
Questions
What are the six columns?
Date, pH, chlorine, turbidity, action, initials.
Does it print the pH, chlorine or turbidity limits I should be checking against?
No, and that is deliberate. Those limits are set by the standard your supply is regulated under, they differ by jurisdiction, and a printed number here could be read as an acceptance criterion it was never meant to be. Write your own limits in from your permit.
How big is it?
A5, 148 x 210 mm, 100 pages, 5.72 mm across the spine.
Is it dated?
No. Start it the day the plant does.
What ruling are the notes pages?
College, 7.14 mm, twenty-four lines to an A5 page.
Why three readings on one line instead of three separate logs?
So a shift in one shows itself against the other two on the same row, not on three different pages.
Harvey was as indefatigable a labourer as any we have named.
Price
from Rp 58.000
Order on WhatsAppTokopediaSoonShopeeSoon
