QUOTE (QM2 @ Oct 6 2008, 10:46 AM)

One thing I want to point out, is that I do not find BP Black entirely waterproof in the way that is useful to me. On a variety of papers, both my husband and I find that, if you spill a liquid (coffee, water, rain droplets, spray from ocean waves, etc) onto a page that has writing in BP Black, the ink will run even if it has been dry for days, months. So it is waterproof in the sense that under no circumstances will liquid remove all the ink from the page-- which is a useful quality if fraud is your concern -- but it is not waterproof, at least in my experience, in the sense that the ink does run (therefore ruining the visual professionalism of the document) under contact with liquid.
Right, although I gave what I believe to be an accurate description of the reason for this effect, the end result is that Noodler's Black can be decidedly less than waterproof on many types of paper. I'm just letting you know that I don't dispute what you said, as it has been a disappointment to me in this way, too. In order to be fully waterproof (or "bulletproof"), Noodler's cellulose-reactive dyes require adequate penetration of the paper, and as currently formulated, Black often falls short of this requirement.

QUOTE (QM2 @ Oct 6 2008, 10:46 AM)

Legal Lapis, on the other hand, does not do this. I can liberally pour liquids over my patient notes and the writing will not budge. For me, this is the important quality of water-resistance, and not so much the fraud-proof element. But I have not yet met a black ink that does not run at least a little under spilled liquids.
That's because Legal Lapis is a very "wet" ink (i.e. it has low surface tension). Black is actually also very wet, which is why it also creeps on some nibs, but it has certain electric properties intended to prevent feathering that allows it to bead up on denser, smoother, less absorbent types of paper nonetheless, which is something you won't see Legal Lapis do. What I've done, as described earlier, is slightly dilute Noodler's Black with an ink such as Legal Lapis, which seems to greatly reduce this effect, making Black completely waterproof on a wider variety of papers.
I should have some time later today to experiment with various mix ratios and papers, so I'll do that and post the results tonight or early tomorrow. Experimenting and comparing with Noodler's Heart Of Darkness should be interesting, too, but I'll need to obtain a sample of that ink first (I've been intending to switch because of this very issue but I wanted to use up my current bottle of Black first, while saving a little for special purposes).
QUOTE (QM2 @ Oct 6 2008, 10:46 AM)

On a different note, we bought Borealis Black at the local Bromfield Pen Shop and tried it. My husband finds the degree of water resistance sufficient, but finds the colour not quite as dark as BP Black. Looking at the two together, I am not sure I agree with that.
I believe that Borealis Black is intended to be the absolute darkest ink that Noodler's can come up with while having some resistance to water (it's not a cellulose-reactive ink), although I guess different people can perceive contrast differently in addition to colors.
QUOTE (QM2 @ Oct 6 2008, 10:46 AM)

But I think will get him Heart of Darkness as well.
Heart Of Darkness is designed to be darker than Black, I believe, as well as faster-drying, which hopefully means that it's more like most of Noodler's other bulletproof inks, and won't leave behind loose dried ink that runs when exposed to water. Please keep the rest of us informed of your results.
QUOTE (biffybeans @ Oct 6 2008, 11:15 AM)

I'm not sure you want to hear this, but there ARE journals where the ink dries much faster..... It's the paper as much as it is the ink.
Right, and it's more a combination of the paper and ink formulation as a whole than it is the dye itself--relatively absorbent paper has no problems with Noodler's Black, and I've had absolutely no issues with running when using Black in mixes. For instance, I just tested the fake Legal Lapis (Illegal Lapis?

), which is a mix between Aquamarine and Black that I've been using lately, and it does not run when exposed to water, even when written on the front side of a Post-it Note (a severe test of this issue). By the way, I'll use real Legal Lapis in my mix experiments later today.