---
product_id: 63575797
title: "Bag, Whirl-Pak, 18oz, 4-1/2\" x 9\" Write-On (Package of 500)"
brand: "whirl-pak"
price: "€ 252.71"
currency: EUR
in_stock: true
reviews_count: 5
category: "Whirl Pak"
url: https://www.desertcart.sk/products/63575797-bag-whirl-pak-18oz-4-1-2-x-9-write
store_origin: SK
region: Slovakia
---

# 4.5" x 9" perfect size Pack of 500 for bulk efficiency 18oz capacity for samples Bag, Whirl-Pak, 18oz, 4-1/2" x 9" Write-On (Package of 500)

**Brand:** whirl-pak
**Price:** € 252.71
**Availability:** ✅ In Stock

## Summary

> 🧬 Elevate your lab game with Whirl-Pak’s precision and bulk power!

## Quick Answers

- **What is this?** Bag, Whirl-Pak, 18oz, 4-1/2" x 9" Write-On (Package of 500) by whirl-pak
- **How much does it cost?** € 252.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/63575797-bag-whirl-pak-18oz-4-1-2-x-9-write)

## Best For

- whirl-pak enthusiasts

## Why This Product

- Trusted whirl-pak brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Write-On Surface:** Custom labeling directly on bag for flawless organization
- • **Bulk Pack Advantage:** 500 bags per pack to keep your workflow uninterrupted
- • **Built-In Tie Closure:** Secure sealing with integrated tie for contamination-free samples
- • **Generous 18oz Capacity:** Ample volume for reliable specimen containment
- • **Precision-Sized for Lab Excellence:** Optimized 4.5" x 9" dimensions fit diverse sample needs

## Overview

The Whirl-Pak 18oz specimen collection bags measure 4.5" x 9" and come in a bulk pack of 500, featuring a write-on surface and built-in tie closure. Designed for scientific and laboratory use, these bags ensure secure, organized, and contamination-free sample storage, making them a top choice for professionals seeking efficiency and reliability.

## Description

Bag, Whirl-Pak, 18oz, 4-1/2" x 9" Write-On (Package of 500)

Review: Good product - Easy to use, steril
Review: Perfect Size! - Perfect for small items or parts. Bags come with built in tie. A must have for organizing small items or parts!

## Features

- Whirl-Pak 18oz write-on specimen collection bags
- Measures 4-1/2" x 9" for laboratory samples
- Package of 500 bags for scientific applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016PD6CYI |
| Best Sellers Rank | #32,511 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Lab Sample Bags |
| Date First Available | October 15, 2015 |
| Item Weight | 4.31 pounds |
| Manufacturer | Nasco International |
| Package Dimensions | 9.25 x 7.17 x 7.13 inches |

## Images

![Bag, Whirl-Pak, 18oz, 4-1/2" x 9" Write-On (Package of 500) - Image 1](https://m.media-amazon.com/images/I/71Hy0HDMnRL.jpg)

## Questions & Answers

**Q: Are these bags sterile? What's the micron size of filter?**
A: they are not sterile

**Q: What is the material of construction?**
A: Whirl pak bags are blended polyethylene

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by D***T on February 11, 2026*

Easy to use, steril

### ⭐⭐⭐⭐⭐ Perfect Size!
*by B***R on August 6, 2025*

Perfect for small items or parts. Bags come with built in tie. A must have for organizing small items or parts!

### ⭐⭐⭐⭐⭐ Just right for lab samples.
*by L***M on May 24, 2021*

These are listed as one of the preferred packaging options for test samples being sent to a lab. With multiple size options, we like their versatility.

## Frequently Bought Together

- Bag, Whirl-Pak, 18oz, 4-1/2" x 9" Write-On (Package of 500)
- Nasco Whirl-Pak B01062WA Write-On Bag, 7.5cm L x 18.5cm W, 0.057mm Thickness, 118ml Capacity (Box of 500)
- Weigh Boats Medium (100ml, 125 Pack) Disposable Plastic Trays for Scale, Anti-Static Square Tray Weighing Dishes, Polystyrene Lab Dish for Powder Weight, Mixing Epoxy, Food Sample Container, Pour Boat

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**Shop now:** [https://www.desertcart.sk/products/63575797-bag-whirl-pak-18oz-4-1-2-x-9-write](https://www.desertcart.sk/products/63575797-bag-whirl-pak-18oz-4-1-2-x-9-write)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-20*