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Bright kindergarten classroom with small tables, chairs and play areas

Applications · Schools, clinics & nurseries

Gentle chemistry for schools, clinics & nurseries.

Children, patients and expectant mothers spend long hours in freshly furnished rooms. For these spaces we recommend a bio-based chitosan scavenger, a silver-ion photocatalyst that keeps working in the dark, and an engineering-grade TVOC treatment for large floorplates — applied as fine mists, with a ventilation window before rooms reopen.

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Deacetylated marine chitosan, bio-based
≥95%
Antibacterial action, light or dark
24 h
GB 50325 Class I handover limit
0.07 mg/m³
Re-test before reopening
24–48 h

01The challenge

Why these rooms need a different approach

  1. 01

    Sensitive occupants

    Cribs, nursery furniture, school desks and mattresses sit right where children and patients breathe. Bio-based chemistry and fine-mist application keep the treatment itself gentle.

  2. 02

    Large floorplates, fixed dates

    Classrooms and wards are fitted out before term or opening day, with modular furniture, vinyl flooring, carpets and acoustic ceilings across whole floors.

  3. 03

    Humid, dim spaces

    Restrooms, corridors and wards without daylight are where mold and bacteria grow — and where an ordinary photocatalyst has too little light to work.

02Recommended formulations

5 formulations, each with a job.

Open any product for its full technical data sheet, or add it to your inquiry list and request samples in one go.

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Furniture & bedding

Whole-floor TVOC

Dim & humid areas

Daylit classrooms

HVAC hygiene

03Workflow

Before the rooms reopen

  1. 01

    Measure the baseline

    Close the rooms for 12 hours and sample at breathing height (0.8–1.5 m). Note the limit the building is accepted against.

  2. 02

    Bio-based source treatment

    Mist cribs, desks, wardrobes, mattresses and cotton textiles with the chitosan scavenger through a 0.5–0.8 mm HVLP gun.

  3. 03

    Large-area TVOC treatment

    Spray workstations, vinyl flooring, carpets and acoustic ceilings with the engineering-grade TVOC eliminator, keep the floor closed for 24 hours, then purge with the HVAC system.

  4. 04

    Long-term surface protection

    Coat walls in classrooms, wards, restrooms and corridors with the Ag⁺ photocatalyst at 8–12 ml/m². It keeps working after lights out and does not grey white walls.

  5. 05

    Ventilate and re-test

    Ventilate, then repeat the closed-room measurement 24–48 hours after treatment under the baseline conditions before handing the rooms back.

04By the numbers

The data behind the plan.

  • WHO indoor air guideline 30-minute average

    0.10 mg/m³

  • GB/T 18883-2022 1-hour average, China indoor air quality standard

    0.08 mg/m³

  • GB 50325-2020 Class I civil buildings at handover

    0.07 mg/m³
Indoor formaldehyde limits in mg/m³ by standard and averaging time. TVOC: 0.60 mg/m³ (GB/T 18883-2022, 8-hour average). Reference values only — confirm the method required in your market.

Coverage per pass for this application

Published coverage per application pass, in ml per m² of treated surface. Products dosed per unit or by weight are not shown.

05Quantity estimate

Plan quantities before you quote.

Pick a formulation and the area to treat. Estimates use the coverage published in each technical data sheet.

Published coverage: 15 – 25 ml/m² across furniture and nursery textiles

Application passes

Use 2–3 passes for raw high-density board or heavy TVOC loads.

Estimated quantity

4.5–7.5L

15–25 ml/m² × 300 m² × 1 pass

Suggested packs2 × 5 L jerrycans
Quote this quantity

Estimate from the published coverage range. Real consumption depends on substrate porosity, nozzle size and baseline readings — our engineers confirm it with your quote.

06Questions

Schools & clinics: common questions.

Ask an engineer
01Which formaldehyde scavenger do you recommend for nurseries?

Chitosan Bio-Based HCHO Scavenger. It is made from marine chitosan and tea polyphenol, was developed for kindergartens, maternity hotels and hospitals, and leaves a breathable biopolymer film on wood and textiles. Ask for its MSDS and test documents with your sample.

02Does the antibacterial coating need sunlight?

No. Ag+ Antibacterial Photocatalyst responds to indoor LED light and daylight, and the silver ions keep it active in complete darkness, which suits windowless corridors, restrooms and wards.

03How long do rooms need to stay closed?

Surfaces are dry in 2–4 hours. For large-area TVOC treatment, keep the floor closed for a 24-hour reaction, then purge with the HVAC system. Re-test 24–48 hours after treatment before handing rooms back.

04Which limit applies to schools and hospitals in China?

GB 50325-2020 places housing, hospitals, kindergartens and school classrooms in Class I civil buildings, with a formaldehyde limit of 0.07 mg/m³ at handover. GB/T 18883-2022 sets 0.08 mg/m³ (1-hour average) for occupied indoor air. Other markets have their own limits — confirm the one that applies to your project.

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Factory-direct supply

Test it on your own substrates.

Tell us the rooms, materials and volumes involved. Our Botou engineering desk replies with a matched set of formulations, dosages and documents.

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