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In Your Opinion, Why Do So Many Premium Pens Have Rust Rings On The Grip Section?


4lex

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I'm inclined to believe that it may not be a function of inks causing the breakdown of the plating and leading to rust but the acidic nature of the OP's own sweat and other bodily fluids, as deposited by the hands when using said writing instruments. At the very least, that shouldn't be discounted.

"When Men differ in Opinion, both Sides ought equally to have the Advantage of being heard by the Publick; and that when Truth and Error have fair Play, the former is always an overmatch for the latter."

~ Benjamin Franklin

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Famous last words. Having written that Parker 75s tend not to have corrosion on the trim ring, this weekend at Vanves flea market I came across a lovely 75 which had all the gold plate rubbed off the ring. (No rust, though.)

 

I'm quite happy as having pointed out this dreadful fault, I was able to secure the otherwise very pretty pen at a bargain price.

Too many pens, too little time!

http://fountainpenlove.blogspot.fr/

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  • 4 years later...
On 11/28/2018 at 8:33 PM, 4lex said:

On the pH scale, which runs from 0 to 14, the pH level of vinegar is between 2 and 3. There are plenty inks that fall in this range:

1.7 for OMAS Blue-Black, OMAS Royal Blue, Visconti, Lapis Blue;

2.2 for Montblanc Blue-Black, Montblanc Bordeaux, Pelikan Blue-Black, Visconti Turquoise;

2.6 for Caron d'Ache Imagine in Blue Sky

2.7 for Pelikan 4001 Blue, Visconti Permanent Blue-Black, Pelikan 4001 Turquoise, Quink Washable Blue, Waterman Purple;

2.8 for Caran d'Ache Escape in Caribbean Sea

3.0 for Montblanc Emerald Green, Quink Permanent Black, Waterman Blue-Black, Waterman Blue;

 

Source: http://www.marcuslink.com/pens/ink/ink-and-ph-levels.htm

I don't know what to think about the accuracy of this list on the website. It says that some inks are listed twice because sometimes a measured value differs from what the manufacturer tells, but the Pelikan turquoise is listed at both 2.7 and 8.2. That is a HUGE difference. Either the ink used was spoiled, or the manufacturer changed the recipe, or it just shows there is no exact value for different batches.

P.S. The list is from 1996 and the 2.7 ph is listed as Pelikan 4001 turquoise but the 8.2, is marked just Pelikan turquoise. Did Pelikan make 2 different turquoises at that time?

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