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The nanometer sized gold colloids can be characterized as follows:
The 2nmn colloid is too small to scatter light and the solution is clear. The remaining sizes scatter light to different degrees and the solution color changes with increasing particle size.
The silver colloids are a newer offering and have not been characterized as well as the gold colloids. They are supplied in water, have a negative surface charge and are available in 4 sizes from 20 to 80nm. The smaller colloids are (20 and 40nm) are yellow in color and the larger sizes (60 and 80nm) are a light gray.
These products are known to be stable for a minimum of one year after opening. To avoid contamination after opening, it is best to handle the product under clean room conditions to avoid contamination by dust or other airborne contaminants. Temperatures for storage, after opening, can vary from 4-8°C (39-46°F) to room temperature depending on whether the application is diagnostic or research oriented. The colloid is stable on boiling and destroyed by freezing. When storing the product below 8°C (46°F) it is the customer's responsibility to ensure that their refrigerator can maintain a constant temperature in the range noted above.
NOTE: To best insure product quality, all shipments of unconjugated gold and silver colloids are sent for next day delivery. No Friday (weekend) shipments.
MSDS Material Safety Data Sheet for Unconjugated Gold Sols
| Size (nm) | Particles/ml | 20 ml | Price $62.00/ea | 100 ml | Price $250.00/ea | 500 ml | Price $825.00/ea | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 2nm | 1.5 x 1014 | 15701-20 | 15701-1 | 15701-5 | ||||||
| 5nm | 5.0 x 1013 | 15702-20 | 15702-1 | 15702-5 | ||||||
| 10nm | 5.7 x 1012 | 15703-20 | 15703-1 | 15703-5 | ||||||
| 15nm | 1.4 x 1012 | 15704-20 | 15704-1 | 15704-5 | ||||||
| 20nm | 7.0 x 1011 | 15705-20 | 15705-1 | 15705-5 | ||||||
| 30nm | 2.0 x 1011 | 15706-20 | 15706-1 | 15706-5 | ||||||
| 40nm | 9.0 x 1010 | 15707-20 | 15707-1 | 15707-5 | ||||||
| 50nm | 4.5 x 1010 | 15708-20 | 15708-5 | 15708-55 | ||||||
| 60nm | 2.6 x 1010 | 15709-20 | 15708-6 | 15708-65 | ||||||
| 80nm | 1.1 x 1010 | 15710-20 | 15708-8 | 15708-85 | ||||||
| 100nm | 5.6 x 109 | 15711-20 | 15708-9 | 15708-95 | ||||||
| 150nm | 1.7 x 109 | 15712-20 | 15709-10 | 15709-105 | ||||||
| 200nm | 7.0 x 108 | 15713-20 | 15709-11 | 15709-115 | ||||||
| 250nm | 3.6 x 108 | 15714-20 | 15709-12 | 15709-125 |
MSDS Material Safety Data Sheet for Silver Colloids
| Size (nm) | Particles/ml | 20 ml | Price $62.00/ea | 100 ml | Price 250.00/ea | 500 ml | Price 825.00/ea | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 20nm | 7.0 x 1010 | 15705-20SC | 15705-1SC | 15705-5SC | ||||||
| 40nm | 9.0 x 109 | 15707-20SC | 15707-1SC | 15707-5SC | ||||||
| 60nm | 2.6 x 109 | 15709-20SC | 15708-6SC | 15708-65SC | ||||||
| 80nm | 1.1 x 109 | 15710-20SC | 15708-8SC | 15708-85SC |