---
product_id: 13003820
title: "3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length"
brand: "3b scientific"
price: "S$263"
currency: SGD
in_stock: true
reviews_count: 11
category: "3 B Scientific"
url: https://www.desertcart.sg/products/13003820-3b-scientific-u19500-diffraction-grating-spectroscope-25mm-diameter-x-115mm
store_origin: SG
region: Singapore
---

# 0.2 mm fixed slit width 25mm diameter x 115mm length compact size 600 lines/mm grating precision 3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length

**Brand:** 3b scientific
**Price:** S$263
**Availability:** ✅ In Stock

## Summary

> 🔍 Unlock the spectrum of possibilities in the palm of your hand!

## Quick Answers

- **What is this?** 3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length by 3b scientific
- **How much does it cost?** S$263 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/13003820-3b-scientific-u19500-diffraction-grating-spectroscope-25mm-diameter-x-115mm)

## Best For

- 3b scientific enthusiasts

## Why This Product

- Trusted 3b scientific brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable Design:** Flashlight-sized and lightweight for effortless handheld use anywhere.
- • **Durable Metal Sleeve Construction:** Robust prism and grating housing built to last in demanding lab environments.
- • **Industry-Standard Diffraction Grating:** 600 lines per millimeter grating ensures superior wavelength resolution.
- • **Fixed 0.2mm Slit for Consistent Results:** Reliable slit width guarantees reproducible and accurate spectral data.
- • **Precision Optics for Crystal-Clear Spectra:** Experience sharp, detailed visible spectrum analysis with a high-quality optical system.

## Overview

The 3B Scientific U19500 Diffraction Grating Spectroscope is a precision optical instrument featuring a 600 lines/mm diffraction grating and a fixed 0.2mm slit, delivering crisp, linear visible spectrum analysis. Compact and lightweight at 25mm diameter by 115mm length, it offers professional-grade spectral resolution in a durable metal sleeve, ideal for scientific, educational, and industrial applications.

## Description

High-quality optical system with centred visible spectrum, which is linear with respect to the wavelength. With fixed slit and prism system with grating in metal sleeve. Slit width: 0.2 millimeters. Number of grating lines: 600 lines per millimeters. Measures 25 millimeters diameter by 115 millimeters length.

Review: The highest quality product of its type - This is a rebranded packaging of the larger "teaching" spectroscope manufactured by Orwin Products Limited (OPL) in England. The smaller version is Colin Winter's original diffraction spectroscope design, now an industry standard, which has been copied by several knockoff factories with varying degrees of quality. This flashlight-sized larger model has generous, bright optics which produce nice crisp and detailed spectra. The only thing it's missing, which would be impossible with this type of design, is a calibration scale. You need to know what you are doing to use this, but it is capable of producing the best results with something you can hold in one hand.
Review: Still Learning to Use This - I still haven't mastered this tool but it is well made.

## Features

- High-quality optical system with centered visible spectrum, which is linear with respect to the wavelength
- With fixed slit
- Prism system with grating in metal sleeve
- Slit width: 0.2 millimeters
- Measures 25mm diameter by 115mm length

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005LY493O |
| Best Sellers Rank | #357,344 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Lab Spectrometers |
| Date First Available | September 27, 2011 |
| Item Weight | 2.19 ounces |
| Item model number | U19500 |
| Manufacturer | 3B Scientific |
| Package Dimensions | 4.96 x 2.4 x 1.5 inches |

## Product Details

- **Color:** blue
- **Exposure Control Type:** Manual
- **Media Type:** Compact Flash
- **Shooting Modes:** Automatic
- **Video Capture Resolution:** 720p

## Images

![3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length - Image 1](https://m.media-amazon.com/images/I/41Wq50JKABL.jpg)
![3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length - Image 2](https://m.media-amazon.com/images/I/51vHZcFxdZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The highest quality product of its type
*by M***R on April 4, 2023*

This is a rebranded packaging of the larger "teaching" spectroscope manufactured by Orwin Products Limited (OPL) in England. The smaller version is Colin Winter's original diffraction spectroscope design, now an industry standard, which has been copied by several knockoff factories with varying degrees of quality. This flashlight-sized larger model has generous, bright optics which produce nice crisp and detailed spectra. The only thing it's missing, which would be impossible with this type of design, is a calibration scale. You need to know what you are doing to use this, but it is capable of producing the best results with something you can hold in one hand.

### ⭐⭐⭐⭐⭐ Still Learning to Use This
*by C***E on December 12, 2024*

I still haven't mastered this tool but it is well made.

### ⭐⭐⭐⭐ Best I could find
*by S***S on January 2, 2013*

Works very well. Easy to use. I like that its small. The price is nice. The only thing I didn't like about it is that it wont work on led lights.

## Frequently Bought Together

- 3B Scientific U19500 Diffraction Grating Spectroscope 25mm Diameter x 115mm Length
- Xenocam 6-22mm 5.0 Megapixel 1/2.5" IR F1.6 CCTV Video Vari-Focal Zoom Lens for CCTV Security Camera
- Arducam Lens Board OV5647 Sensor for Raspberry Pi Camera, Adjustable and Interchangeable Lens M12 Module, Focus and Angle Enhancement for Raspberry Pi 5/4/3/3 B+

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/13003820-3b-scientific-u19500-diffraction-grating-spectroscope-25mm-diameter-x-115mm](https://www.desertcart.sg/products/13003820-3b-scientific-u19500-diffraction-grating-spectroscope-25mm-diameter-x-115mm)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-23*