petak, 28.10.2011.


Acid test gold - Selling rs gold - 14k gold antique.

Acid Test Gold

acid test gold

    acid test gold
  • An acid test is any qualitative chemical or metallurgical assay which uses acid; most commonly, and historically, the use of a strong acid to distinguish gold from base metals. Figuratively, acid test is any definitive test for some attribute, e.g.

acid test gold - Gold Acid

Gold Acid Test Kit 10k,14k,18k,Testing Stone & Wood Box

Gold Acid Test Kit 10k,14k,18k,Testing Stone & Wood Box

5 New Precious Metal Tools 3 Testing Solutions. This is a new set of 3 testing solutions. Everything you need to appraise 10k, 14k and 18k. These are the finest acids made today. Each bottle has 1/2 fl oz of acid. The sturdy plastic bottles maximize safety and allows the user to easily squeeze out one drop at a time. You receive: One bottle of 10K testing acid. One bottle of 14K testing acid. One bottle of 18K testing acid. Due to testing acid being classified as a hazardous material it cannot be shipped by air and can only be shipped to the lower 48 states. Acid Test Stone. This is a new acid testing stone. This stone is used to test 10k, 14k, 18k and silver. Use this stone with acid solutions. It measures approximately 2" x 1 1/2" x 1/4" (50 x 37 x 6 mm). This stone will not fit in the box. Wooden Box. This is a new wood box. It is used to store up to 3 acids. It measures approximately 51/4" x 2 7/8" x 4" (133 x 72 x 101 mm).

88% (8)

Improved Come And Take It Monument

Improved Come And Take It Monument

I can read the lettering at the base of the monument in the original print -- with a 5x magnifier.

After two weeks of experimentation, I have resolved how to increase Dmax (intensity of dark tones) in the Texas Chrysotype process. Instead of the usual 8 drops gold added to 8 drops of modified ferric ammonium oxalate, I added 10 drops of gold to 8 drops FAO. I reduced the amount of additive to the FAO, from my standard of 6 drops to each 10 ml of FAO, to 4 drops. This is necessary as the increase in gold results in greater grain; the more additive I use in the FAO, the grainier the image. More than about 6 drops with 10 drops of gold also makes skies splotchy. The reduced modification of the FAO cancels the increased grain, keeping it fine, and producing smooth sky tones.

Earlier tests, with contrasty negatives, revealed no greater intensity of the overall image if the ratio of gold to FAO was increased. But I had not tested any thin ones, such as this.

This print presented a special challenge: with more gold, exposure time increases. My original print required 2 minutes, 15 seconds of exposure in my UV box. When I removed this print from the frame, it was underexposed by about two stops. With correct printing times, no development of a print is necessary. With a weak print out, only water is needed to save the print. I immersed the print face down in warm (not hot) water. It instantly developed out. With the Chrysotype s, the lowest contrast is supposedly obtained with a weak oxalic acid first bath; with gold, water produces the lowest contrast. Cold water yields no further development of a print. I have on occasion even added ice to a liter of tap water to "freeze" development so that a properly exposed print does not dark. Tepid water gives slight development, useful for a slightly underexposed print; warm water moderate development; and very hot water (~130 degrees F) will save a faint print. In the print in this series of the door through which Fannin was carried to be executed, I used a warm and very concentrated boric acid bath to develop out a grossly underexposed print and get the blue tone as a bonus. Had I used hot water, the print would likely have come out slate gray -- less appropriate to such a poignant and evocative subject.

Jon's Bar and Grille

Jon's Bar and Grille

Larry Fine, one of “The 3 Stooges” Born at 606 South 3rd Street,
the building that now houses Jon’s Bar & Grille.

Born October 5th, 1902 at 606 South 3rd Street, Philadelphia, PA, Lawrence Feinberg was the son of jeweler Joseph Feinberg and his wife, Fanny Lieberman. Larry’s ability as a violinist was the result of a terrible accident that scarred the youngster for many years. One night, while his mother was out at the movies, his father babysat him. In close proximity to the crib, Feinberg was testing the gold qualities of jewelry with a chemical called oxalic acid, a powerful mixture that turns phony gold green and can eat through skin.

Larry awoke, reached through the crib, and grabbed the bottle and spilled some on his arm. The acid had eaten away part of his arm. It was so serious that the hospital wanted to amputate. His father would have none of it and found a doctor who grafted skin from his child’s leg over the wound.

As part of his therapy, Larry was given violin lessons to strengthen his arm and he became an accomplished musician. He also took up boxing during his formative years, primarily to strengthen his arm.

Larry married a talented singer (Vaudeville) named Mabel Haney on June 22nd, 1926. He also had a daughter named Phyllis.

After having made over 185 movies and shorts, Larry Fine passed away on Friday, January 24, 1975 at the age of 73. He is still remembered as one of the best know entertainers America has ever produced.

acid test gold

acid test gold

PuriTest Gold Silver Platinum Test Acids with Diamond Tester, Digital Scale, FREE Solid Silver Bar and More

Very easy to use and includes instructions. Sealed box contains six (6) bottles test solution; each bottle contains 1/2 fluid oz (0.5 fl oz) test acid. You will receive one 10k solution, one 14k solution, one 18k solution, one 22k solution, one Silver solution, one Platinum solution--each in new box sealed with shrink-wrap. All materials are brand new and will last many uses. DigiWeigh 100AS scale allows you to choose from g, oz, ct, gr/gn; Scale Capacity/Accuracy: 100/0.01 g, 3.527/0.0005 oz, 500/0.05 ct, 1542.8/0.2 gr; also features TARE function and INCLUDES calibration weight; manufacturer's Lifetime Warranty. Authentic Culti Diamond Selector II with 60-day money back guarantee; includes leather pouch; easy & reliable; can distinguish diamond from white corundum and YAG. Use the mini solid silver bar to practice/demonstrate test procedure, or simply keep as investment. Popular among professionals, hobbyists, coin enthusiasts, and business owners alike. Excellent tools. Excellent Value. Great gift idea.

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