[pure-silver] Re: Spotting and Microscope Questions
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 12 Oct 2004 13:57:58 -0700
----- Original Message -----
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, October 12, 2004 12:51 PM
Subject: [pure-silver] Re: Spotting and Microscope Questions
> Scratching shouldn't be a problem since the toothpick
> isn't moved from side to
> side but rather brought down vertically until it just
> contacts the paper and
> deposits a droplet of iodine solution. A razor blade can
> be used to make a
> finer point on the toothpick. Even if a brush is used it
> too should be used
> with a vertical rather than a side to side motion.
>
> The spotting dye should be very dilute and density built
> up slowly with several
> applications. Mix the dye on an old white plate. Unused
> dye can be allowed to
> dry on the plate and re-dissolved with a small amount of
> distilled water
> whenever needed. This saves time since you don't have to
> re-mix each time. If
> you have to fine-tune the color use a toothpick or brush
> to add a small amount
> of another color rather than using an dropper. Store the
> plate with it's dye in
> a ziplock bag. Many expert spotters swear that spit is
> better than water.
>
> Spotting dyes are like any other dyes in that they will
> fade over time when
> exposed to light.
>
> When you get into magnifications greater than that of a
> hand lense hand-eye
> coordination becomes a problem.
>
> Jerry
>
To make a fine point on a toothpick use the same
technique used on drawing pencils, a small card with fine
sandpaper on it. This is more controllable.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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