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A smooth start. A simpler sample transfer.
Make the weighing surface part of your workflow—not an afterthought. Heathrow Scientific weighing papers combine a very smooth, nitrogen-free surface with strength to support dense material. Choose the sheet size that fits your balance setup and the room you need for handling.
- Smooth surface: Nitrogen-free paper supports good sample recovery.
- Dense materials: Strong enough to support dense samples during weighing.
- Three square sizes: Choose 3 × 3, 4 × 4 or 6 × 6 in. to suit your setup.
- 500 sheets per pack: A consistent pack count across every size.
Keep the focus on the sample
Moving a weighed portion to its next container calls for a surface that releases the sample well. Heathrow specifies a very smooth surface for good sample recovery, while the paper is strong enough to support dense material.
The choice here is straightforward: the same stated surface benefits, three sheet sizes, and 500 sheets in every pack. Use the size guide below, then select the matching catalog-number row in the ordering table.
Why labs choose Heathrow weighing papers
Smooth by design
A very smooth surface supports good recovery when the weighed sample is transferred.
Nitrogen-free paper
The manufacturer identifies the paper as nitrogen-free. Confirm suitability against your analytical method rather than assuming a purity or certification grade.
Strength for dense material
Designed to support dense material during weighing; no numeric load rating is published.
One pack format
All three sizes contain 500 sheets, simplifying repeat orders when different benches use different sizes.
Which sheet size do I need?
Start with your balance pan and the space available inside its weighing chamber. Allow room to handle the sheet without touching the chamber walls; the paper should not interfere with the weighing mechanism.
3 × 3 in. · 120116
7.6 × 7.6 cm. The smallest option when a compact sheet provides enough working area for your sample.
4 × 4 in. · 120117
10.2 × 10.2 cm. The middle size when you want more handling area than the 3-inch sheet.
6 × 6 in. · 120118
15.2 × 15.2 cm. The largest sheet for setups with sufficient pan and chamber clearance. Larger dimensions are not a higher load rating.
Ordering tip: Quantity 1 in a row means one pack of 500 sheets—not one sheet. No separate configuration dropdown is needed.
Typical applications
- Routine weighing of solid samples where paper is suitable for the method
- Preparing weighed portions for transfer to another vessel
- Teaching laboratory weighing exercises
- Stocking balances with a consistent 500-sheet pack format
Follow your laboratory procedure for taring, sample handling and disposal. Chemical resistance, sterility, ash content and a maximum working load are not specified for these papers.
Need a container rather than a flat sheet?
For a shaped weighing surface, compare our MTC Bio square and diamond weigh boats. For liquid weighing, explore the 40 mL WeighBucket with handle and spout. These are alternative formats, not accessories included with the paper; check their specifications against your method.
Frequently asked questions
How many sheets are in a pack?
Each size is supplied as one pack of 500 sheets. A quantity of 2 means two packs, or 1,000 sheets of the selected size.
Which catalog number matches each size?
120116 is 3 × 3 in. (7.6 × 7.6 cm); 120117 is 4 × 4 in. (10.2 × 10.2 cm); 120118 is 6 × 6 in. (15.2 × 15.2 cm).
What does the smooth surface help with?
Heathrow describes the very smooth surface as supporting good sample recovery. It does not publish a recovery percentage, so do not assume complete transfer for every material.
Are these papers nitrogen-free?
Yes. The manufacturer describes these weighing papers as nitrogen-free. It does not specify an analytical certification or numerical nitrogen limit on the product page.
Can the paper support dense material?
Yes, the manufacturer states that it is strong enough to support dense material. No maximum mass is specified; follow your method and balance requirements.
Will every size fit my balance?
Not necessarily. Compare the sheet dimensions with your balance pan and weighing-chamber clearance. Choose a size that leaves room for handling and does not interfere with the balance.
Is this filter paper, or paper for liquid weighing?
This product is sold as weighing paper, not as filter paper or a liquid-holding container. Filtration performance and liquid resistance are not specified. Use an appropriate weighing vessel when your method requires containment.
Does the pack include the balance shown in the photo?
No. The photograph illustrates weighing paper in use. The ordered pack contains 500 sheets of the selected size; the balance and sample are not included.
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