
This range of polystyrene particles is excellent for SEM calibration purposes. It is possible to derive an internal standard of size by mixing a suitable concentration of these particles with the particles of unknown size being studied. The wide range of particle sizes available is listed below, with the standard deviation and approximate particle concentration. These values may be subject to variation between different batches.
Although these standard deviations are very small, the suspension may contain some particles of material with different diameters from the mean. A statistically significant number of latex particles should be included in any micrograph where a size comparison is to be attempted. It is important not to subject these spheres to excessive irradiation. All solutions are approximately 0.1% weight by volume, packed in vials of 5ml.
Cat. no. | Mean particle size* (µm) | Standard deviation (µm) | Particle concentration (approx) n/ml |
AGS130-1 | 0.095 | 0.021 | 1.05 x 1012 |
AGS130-4 | 0.216 | 0.0009 | 1.80 x 1011 |
AGS130-7 | 0.855 | - | 3.04 x 109 |
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*Particle sizes shown may vary due to batch availability. |
Some or all of these products require refrigeration storage between 2-8˚C. As a result, and to retain the integrity of the product, we will not ship on Fridays or where we cannot confirm a next day delivery. Additionally, we cannot accept customers returns for these products if ordered in error as the storage has been outside our control.
LEAD TIMES: Average Lead Times are shown individually in days for any products not currently in stock. Whilst we are working closely with our suppliers to minimise the impact of global supply chain issues, and regularly update our product prices and lead times, some are subject to change due to supply chain fluctuations.
Delivery is calculated at the checkout, please see our delivery and returns page for more information.