This paste, which has DiI C18 uniformly dispersed within a proprietary hydrophobic carrier, is commonly used to dab onto larger areas than smaller areas commonly used with crystals. Any moisture on the area the paste is applied may be the cause for lack of adherence. Apply the paste using a small flat-head spatula or toothpick and keep it in place a bit longer to ensure contact. The area may also be covered with parafilm to ensure contact as well.
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