Category: science kits

Tuesday, 13 August 2013

12:23 – Things are a bit hectic around here. We’re shipping lots of kits, and we just got an order yesterday from a state distance-learning program for 40 custom AP chemistry kits, which will ship the last week of August and the first week of September. So far this year, we haven’t had to back-order even a single kit for a single day, and I’m hoping to keep it that way. Our current finished-goods inventory is in pretty good shape for now, although we’re about to head into the crazy time–the last half of August and the first half of September. With a couple of exceptions, we have all the raw materials on hand that we need to make a bunch more kits, so it’s just a question of getting bottles filled, subassemblies built, and finished kits made up.


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Monday, 12 August 2013

07:23 – I got email over the weekend from a long-time reader who, like more than a few of my readers, is becoming increasingly concerned about societal breakdown. He wants to store a year’s worth of food for him and his family, but they’re a young couple with a toddler and can’t afford to spend much. He looked at the emergency food page on Costco’s website and was horrified at how much it’d cost him to store a year’s worth of freeze-dried foods for his family.

I told him, in short, not to worry about buying expensive freeze-dried food. Instead, he should be buying canned and regular dry food. I told him to ignore the “best-by” dates on canned foods. We just bought some canned food at Costco that has a best-by date in 2015. The reality is that that canned food will be just fine–nutritionally and taste-wise–for at least 20 years, and probably much longer. I remember back in the late 60’s or early 70’s when they raised a riverboat that had sunk in 1865. Among the many items they recovered were numerous cans of food. Scientists evaluated that food for safety and nutritional value and found that it was still safe and still provided good nutrition. In some cases, the appearance and taste were a bit off, but not enough to make it inedible, particularly in an emergency. So those cases of canned pork and beans, vegetables, fruit, and so on from Costco are going to be fine for 20 years, minimum. About the only nutritional loss over the next 20 years or more is likely to be vitamins A and C. Big deal. Stock up on multivitamins and keep them in the freezer. Same deal on dry foods. Costco sells 20-pound bags of white rice in heavy plastic bags. I told him they’ll be fine 5, 10, and 20 years from now, even stored in the original heavy plastic bags. Same thing with stuff like dry beans, macaroni, and so on. Vegetable oil has among the shortest shelf-lives of common foods, and even it should be good for at least five years in an unopened container.

And, with a few exceptions, the same thing holds true for storing medicines for an emergency. I have, for example, some amoxicillin, metronidazole, sulfadimethoxine, and other antibiotics in the freezer. The expiration dates are mostly in 2014 or 2015. The truth is that all of those drugs will still be safe to use and effective 20 years or more from now. There may be a slight loss of potency, but not enough to matter. Same thing for the dozen or more other classes of drugs I have stored, from antihistamines to analgesics to antdiarrheals. Particularly when frozen, these drugs maintain potency for decades.

So, I suggested that each time they make a Costco run, they buy at least two at a time. If they’d ordinarily buy one bag of rice, buy two or three or four. If they’d ordinarily buy one case of canned corn or baked beans, buy two or three or four. Stick one of each in the pantry for current use, and the rest on the shelves in the basement. That avoids one mistake people often make, which is to buy emergency food that isn’t stuff they regularly eat. This way, they’re buying only stuff that they eat regularly, and they can cycle it through so that the new stuff they buy always goes into storage. Once they reach steady-state, they’ll have a year’s supply of food on the basement shelves, and they’ll be eating canned and dry food that averages a year old. Which will be indistinguishable–nutritionally or otherwise–from the same items immediately after purchase. And, of course, the other advantage is that if any of the food you purchase ends up being recalled for contamination or whatever, you won’t have eaten any of it yet.

Finally, he was worried because he hadn’t found much information about storing food for their dog. I told him not to worry about that, either. Dog food wasn’t even invented until something like 1935. Until then, dogs ate human food from their masters’ tables, and they got along just fine for 35,000 years. They were just as healthy and lived just as long on human food as they do on all this specially formulated dog food. In fact, I suspect that dogs still lament the invention of dog food, because every one I’ve ever known much preferred table scraps. And, having read about what goes into dog food, I can’t say I blame them.


I continue to be amazed by just how inexpensive decent scientific equipment can be nowadays. A couple weeks ago, I ordered a scale from Amazon with milligram (0.001 g) resolution and a 20 g capacity for twenty bucks and change. A little while ago, I ordered a pH meter from Amazon with 0.01 pH resolution and automatic temperature compensation for $105.


Barbara and I got a lot done over the weekend, including building another small batch of the CK01A chemistry kits. We’re in pretty good shape now on all of the kits except the CK01B chemistry kits, of which we have only five in stock. So today my first priority is to build some more of those. I have everything on hand to build another 13 of those, so that’s what I’ll do. Then it’ll be back to working on the next batch of 60 biology kits.

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Sunday, 11 August 2013

08:57 – Barbara labeled a bunch of bottles for biology kits yesterday, and will label a bunch more today. I’ll be filling those over the next few days, along with everything else I have to do. We’re in pretty good shape on finished-goods inventory, with enough of all kits to carry us through end of this month, or nearly so. By then, we’ll have more in stock.


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Saturday, 10 August 2013

09:55 – I don’t know why, but I’m still surprised every time I buy components. So much for government inflation figures. The sodium bicarbonate tablets cost 50% more than they did when I ordered them a year ago. The purple Sharpies were up more than 20% in less than six months. The 9V batteries were up more than 8% since I ordered them a year ago. My guess is that the real inflation figure, like the real unemployment figure, is at least three times higher than the government admits to.

Of course, inflation is actually a hidden tax on monetary assets. It penalizes the prudent and the creditors, and rewards the imprudent and the debtors. And it eventually makes the prudent and the creditors decide to transfer their assets to tangible property instead of fiat currency. Which is why I’m happy that I have, for example, almost a thousand test tube racks in stock. The real value of the money I used to buy those has been decreasing every week, while the real value of those test tube racks remains the same. So, a year from now, that $4 test tube rack will sell for $5 or whatever.


Once the autumn rush has tapered off, I’m seriously thinking about bringing up a shopping cart system. I actually installed Zen Cart a couple of years ago, but I’ve never had time to enable it. Until now, about 99% of our sales have been packaged kits, but we’re starting to get more requests from people who want to order just specific components.

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Friday, 9 August 2013

09:06 – ESR long ago predicted that Android would kick Apple’s iPhone ass. I saw some recent figures yesterday that illustrate just how right Eric was. Apple’s worldwide market share of smart phones is about one unit of every seven sold. Android pretty much gets the other six. Blackberry is rapidly becoming an asterisk, and is now trying to sell the company. For what it’s worth, which isn’t much.


I got a couple dozen chemistry kits built yesterday, which gives me a bit of a breather. Today I need to cut purchase orders for stuff we’ve run short/out of. I actually did the first one last night. We’re completely out of the 650 mg sodium bicarbonate tablets that are included in both chemistry kits. The last time I ordered those, a year ago, I paid about $12 for a bottle of 1,000. The place I bought them from last year no longer carries the 650 mg tablets, only 325 mg tablets in bottles of 100 rather than 1,000. So I checked around and found that the price had gone up significantly and there were few sources offering the 650 mg bottles of 1,000. Amazon stocks them at about $18/bottle, a 50% increase in one year. They had only four bottles in stock, so I ordered all of them. A bottle is about 40 kits worth, so we’re covered for another 150+ kits once those arrive. A quick look at my inventory sheet tells me that the only other chemistry kit components we’re critically short of are purple Sharpies and 9V batteries, so I’ll get a gross of each of those on order as well.

This weekend, Barbara will continue labeling bottles for a new batch of 60 biology kits, and get started on labeling bottles for a new batch of 60 chemistry kits. I’m also expecting an order from a state distance-learning virtual school for 40 custom AP chemistry kits. That may or may not happen, but I suspect it will. If it does, I’ve told them we can ship within 30 days after receipt of order/payment, so things are likely to get even busier around here.


09:11 – Wow. I just checked Amazon, which now says it has nine bottles of the sodium bicarbonate tablets in stock at $19.99/bottle, versus the $17.79/bottle I paid less than 12 hours ago. Geez.

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Thursday, 8 August 2013

08:56 – I’m building chemistry kits today. As of this morning, our inventory of the CK01A kits is minus one. We’re also down to only six of the CK01B kits. We’re currently shipping a dozen or more CK01A kits a week and only three or four of the CK01B kits, so the priority today is to get some CK01A kits built. We’re also down to a couple dozen of the BK01 biology kits in stock, so Barbara’s priority this weekend will be working on those. Then I need to get back to building subassemblies for another batch of 60 of the CK01A kits.


09:39 – Towards a radical new theory of Anglo-American slavery, and vindication of free markets

There’s actually nothing radical or new about it, it’s not a theory, and most of my readers are probably already familiar with the essential points, but it’s still worth reading. The left has always tried to make classical liberals (nowadays called libertarians) the bad guys, just as they try to make the American Civil War about slavery. If you read Locke or Jefferson or any of the other 17th and 18th century libertarians, you’ll find that they universally abhorred slavery. If you’d asked a hundred Union soldiers what they were fighting for, at least 99 of them would have said “to preserve the Union”. If you’d asked if they weren’t really fighting to free the slaves, they’d have looked at you funny. Same thing on the other side. At least 99% of Confederate troops would have told you that they were fighting to protect States’ Rights. If you’d asked if they weren’t really fighting to keep their slaves, they’d have looked at you funny, because almost none of them owned even one slave.

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Wednesday, 7 August 2013

15:36 – It seems that a week seldom goes by without some sort of problem at Dreamhost. Maybe I was spoiled by Greg & Brian’s Excellent Hosting Service, but Dreamhost is the pits by comparison. Until an hour or so ago, web, mail, and webmail were all been running very slowly if not completely inaccessible for several hours. I checked the Dreamhost system status page, which had no problems reported. So I started a trouble ticket, only to get a message that this was a known problem and had been reported by other users. I think the real problem is that Dreamhost has some downtime almost every day, which they (correctly) think makes them look bad. So unless the problem is on such a large scale that they can’t hide it, they simply don’t admit publicly that there are any problems. A dishonest system status page is worse than not having one at all.

I originally tried to make a post at around 0800. I tried literally half a dozen times between then and now, and each time the system dropped me. At one point, I thought I might be blaming Dreamhost unfairly because I started having troubles getting to other sites. Of course, the other usual suspect is Time-Warner Cable, which has frequent problems with its DNS servers. So, just to cover all bases, I power reset my cable modem and router. Things are still slow, but not as slow as they had been.

I’m taking my first break of the day from working on science kits. Despite the problems with our websites, we sold four chemistry kits today, which took our remaining inventory to zero. So, after spending this morning finishing up new batches of the two forensic supplement kits, I started on final assembly of a new batch of chemistry kits. I’m doing a quick batch of a dozen first. That should be enough to hold me for at least a couple of days while I get another three dozen built. And at some point I simply have to take some time to generate purchase orders or we’re going to start running out of components.

We watched the first series of Hell on Wheels. It was pretty decent, not as good as, say, Deadwood, but not bad at all. I gave it three stars on Netflix. Series two is another story. I call it Hell on Wheels Coming Off. It’s grossly inferior to series one. The actors are still very good, as are the production values. It’s the writing that has gone downhill fast. I understand there’s a series three in the works, but I don’t think we’ll bother watching it.

I remember reading an article back in the mid-60’s in Popular Photography or Modern Photography. They were talking about a group of young, aspiring documentary photographers at a workshop in New York. The workshop was led by a well-known Eastern European photographer. The students were showing the portfolios to the group. One student was no doubt encouraged when the instructor took a long time looking at one of her images. She was probably crushed at his comment, rendered in his deep Eastern European accent: “Is perhaps a rough sketch of no idea.”

That’s the problem with a lot of TV series that start well. Quite often, the series creator writes all or most of the early episodes, and is very hands-on even with those episodes credited to another writer. But if the show takes off, the production company starts throwing more resources at it, including (unfortunately) more writers. I suspect their thinking is that a group of writers will put out better storylines. The truth, of course, is that with rare exceptions writing collaborations just don’t work. It’s much better to have one writer doing it all.


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Tuesday, 6 August 2013

08:02 – As expected for this time of year, we’re running just-in-time on kits. We get a batch of one type built just as we’re running out of another type. At times, including today, we’ll ship kits that we just finished building that day or the previous day. Our current run rate is two or three kits a day–60 to 90 kits a month–and increasing, which is reasonably good for early August. Now I need to go build more kits.


13:17 – Call me sexist. I don’t care. It’s bad enough when one of our young men is killed in action in the Middle East. When it’s one of our young women KIA, it’s an entirely different level of bad. And when that young woman is the mother of two small children, it’s simply indescribably bad. Caryn E. Nouv, age 29. What kind of society puts its young mothers on the sharp end?

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Sunday, 4 August 2013

09:43 – Barbara is cleaning house this morning. This afternoon, we’ll continue work on labeling and filling containers for science kits. We’re in pretty good shape on biology kits and forensics kits. Enough to carry us through the end of this month, anyway. We’re down to a dozen or so finished chemistry kits, but we have enough subassemblies to put four dozen more together, on-the-fly if necessary. Again, that may carry us through the end of this month. Next month is another story. September won’t be as busy as August, but it may be nearly so. The real crunch is from mid-August through mid-September. During that 30-day period, we may ship 25% of the entire year’s sales.


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Tuesday, 30 July 2013

09:38 – I just shipped a core forensic science kit, which includes a bottle of Kastle-Meyer reagent. I add that bottle immediately before sealing the box, because we store KM reagent refrigerated to extend its shelf life. That bottle of KM reagent was the last one we had in stock, so it’s time to make up more.

I’m probably being more cautious than necessary. KM reagent is inherently unstable by design, but it’s actual pretty damned stable if stored under an inert atmosphere in a nearly full amber glass bottle with a granule or two of zinc metal to prevent oxidation, and an airtight cap. Unopened, that bottle should remain stable for years. So I’m debating making up a new batch of 30 or 60 bottles rather than the usual 15.

Not that it’s a big deal to make the stuff up in small batches. It just a matter of making up a 40% w/v solution of potassium hydroxide, dissolving enough phenolphthalein powder in the alkaline solution to make it 4% w/r to phenolphthalein, refluxing for half an hour or so over metallic zinc to reduce the phenolphthalein to phenolphthalin, and then making up the solution to double the initial volume with 70% ethanol.


11:34 – A man after my own heart.

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