---
title: "Nebula®: Book and Document Disinfection Machine | Oracle"
description: An automated system for the disinfection of books and documents. Eliminates bacteria, mould and viruses using controlled misting technology. Discover Nebula®!
date: 2026-03-12
url: https://www.depulvera.com/products/nebula.html
---

![Nebula Book Disinfection Machine for Libraries and Archives](https://www.depulvera.com/images/sliders/nebula-book-disinfection-machine-for-libraries-archives-1920x800.jpg)

# Nebula®

Nebula is an **automatic machine** for the disinfection of books, documents and paper materials, designed to **eliminate microbiological agents** after dusting. Through a **controlled misting and drying process**, it allows external surfaces to be treated evenly and safely, whilst protecting both the materials and the operators.

[Discover Nebula](https://www.depulvera.com/#features)

## Features of Nebula®

A disinfectant solution based on quaternary salts in distilled water is applied via controlled atomisation, ensuring even distribution across external surfaces.

The material is then dried using a calibrated air flow, which allows the treatment to evaporate completely without leaving any harmful residues.

![Nebula Book Disinfection Machine Features](https://www.depulvera.com/images/book-cleaning-machines/nebula-book-disinfection-machine-book-how-to-use-1200x798.jpg)

## Disinfection Process

The item or document is placed inside the system to start the cycle.

The quaternary salt-based disinfectant is sprayed evenly onto the external surfaces.

A controlled air flow ensures rapid and thorough drying.

The number of passes can be set to adapt the treatment to the condition of the materials.

## Key benefits of Nebula®

High productivity

### Controlled disinfection

Precise adjustment of times and cycles for uniform and effective treatment.

High productivity

### Safety for materials and operators

Nebulisation with quaternary salts and a closed system with filtered extraction.

High productivity

### Modular design

Structure separable into two units to facilitate transport and installation.

## Nebula® technical specifications

Nebula is the system for the controlled disinfection of paper materials, integrating atomisation and drying technology into an automatic and safe process.

| TECHNICAL DATA |  |
| --- | --- |
| Maximum book dimensions (W x D x H) | 600 x 440 x 180 mm |
| Machine dimensions (W x D x H) | 750 x 1530 x 1230 mm |
| Operating speed | up to 3 books/min |
| Operating mode | automatic (2 stages) |
| Process | spraying + drying (2 chambers) |
| Disinfectant | quaternary ammonium compounds (QAC) in distilled water |
| Safety system | extraction with HEPA filter for particle containment |
| Structure | modular with wheels, separable for transport |

## How Nebula Works

Nebula® operates through a two-phase process:

1. **Nebulization chamber**: a controlled mist of disinfectant (quaternary ammonium compounds) is applied to the external surfaces of the material.
2. **Drying chamber**: the item is dried through a calibrated airflow system, ensuring complete evaporation without leaving harmful residues.

The entire process is designed to ensure:

- uniform application
- controlled exposure
- operator safety

![Nebula Book Disinfection Machine how works](https://www.depulvera.com/images/book-cleaning-machines/nebula-book-disinfection-machine-book-how-to-use-1200x798.jpg)

## When to choose Nebula®’s controlled and scientific disinfection

The main disinfection methods applicable to paper materials include ethylene oxide, UV light and treatments based on quaternary salts. Nebula adopts the latter approach, using **controlled nebulisation of quaternary salts in distilled water**, selected for their effectiveness against bacteria, mould and viruses and for their **compatibility with conservation practices**.

Disinfection is necessary when **dealing with biological contamination that cannot be managed by cleaning alone**, and when a treatment that is repeatable and safe over time is required.

The need for reliable systems became clearly apparent during **the SARS-CoV-2 health emergency**, when it became necessary to disinfect materials after every use. Approaches based on controlled atomisation have demonstrated the ability to **operate safely even on large volumes**.

![Nebula Controlled Approach to Disinfection](https://www.depulvera.com/images/book-cleaning-machines/nebula-controlled-approach-to-disinfection.jpg)

This type of treatment has also been applied in institutional settings, such as at the **University Library of Genoa**, where Nebula was used to disinfect manuscript collections affected by fungal infection. **The treatment was validated through pre- and post-treatment microbiological analyses**, which confirmed the elimination of spores and the absence of recurrence over time.

## Frequently Asked Questions

## Request Information

Contact us for more information about Nebula or to request a demonstration.

[Contact Us](https://www.depulvera.com/contact.html)[Download Brochure](https://www.depulvera.com/images/pdf/Oracle-Innovative-Book-Cleaning-Machine_Brochure.pdf)