One Teaspoon

[cbong]

I have been wondering for quite a while what 1 teaspoon refers to.
Is it a teaspoon with levelled content till brim? Or should there be a heap of crystals? Furthermore, there are so many spoons with differing depth.

Is 'agak-agak' the call of the day?? Your views?

[Simon]

there are measurement spoons available, but i go with the estimation method

[juggler]

I would use the levelled teaspoon. Though not accurate, at least we don't overdose if we use a heap on the teaspoon.

I usually use those teaspoons used for dispensing medication. But you can also get such measuring spoons used in making cakes.

[wf7850]

To be exact - one teaspoon is equivalent to 6 grams in term of weight.

[geoffrey]

To be exact - one teaspoon is equivalent to 6 grams in term of weight.

Wouldn't density of the material measured affects how much a teaspoon is if it is determined by weight? I have always thought 1 teaspoon = 5ml. Hence, a teaspoon of KNO3 is 5ml in volume. Am I right?

[vinz]

I have always assumed that they mean flat teaspoon... that is the most accurate, and I assume the majority of the literature (professional or hobby-grade) will go for accuracy.

A teaspoon is 5ml... according to standards.

Note: The double ended "teaspoon" given at the clinics are 2.5ml and 5ml. I've noticed that some vendors of powdered or crystalised fertilisers (like K2SO4, KNO3, etc) include this double ended "teaspoon".

[KoiSG]

Long time ago during my secondary school days, we were told that in recipe books, 1 teaspoon is not level but should be a small mould on the teaspoon. 1 level teaspoon is actually 3/4 of a teaspoon (for powder whereas liquid is level) whereas i heap spoon is about 1 1/2 of a teaspoon. Thats the measurement for flour but don't know whether it applys to this?

Cheers
Sean

[rocketshrimp]

So the estimate of 1ml = 1g? Some instructions are confusing, asking for g instead of ml.

And while we are on this...what is 1 drop then? 1 drop = 1g = 1ml?

[Nicky]

So the estimate of 1ml = 1g? Some instructions are confusing, asking for g instead of ml.

And while we are on this...what is 1 drop then? 1 drop = 1g = 1ml?

The weight of 1 tea-spoon of anything depends on the density.
For pure water, it is 1ml=1gram.
But for heavier materials such as Salt-Water or Mercury you can expect the weight of 1ml to be significantly heavier.

Go to any clinic and ask for the spoon for adminstering medicine. The bigger end (5ml) should be 1 tea-spoon and the other 2.5ml is the half-tea-spoon. I believe whatever you are tying to measure has to be level-off the spoon. Obviously there are still room for 'error' because one can always pack say K2SO4 very very tightly (compressed) on a tea-spoon vs just normal scooping.

[rocketshrimp]

My kno3 dosing instructions says 10g for 100l. ....and provided me with a 2.5/5 ml spoon.

Dr mallick's products...need a usability review.

[juggler]

You can refer to these pages if you are preparing stock solution or want to know how many ppm you are adding:

http://www.csd.net/~cgadd/aqua/art_p...osage_calc.htm
http://www.csd.net/~cgadd/aqua/art_plant_aquacalc.htm

I just tried entering your suggested parameters and with "Amount of water to mix with" = 1 ml, I found you are adding 61ppm NO3. I think too high. Try somewhere around 1/4 teaspoon per 100L.

Cheers!

[geoffrey]

If you are not comfortable dosing dry, try doing this.

Go get hold of a weighing machine. Those you can find in your office use for weighing mails. And 2 empty 500ml bottles of Ice Mountain Water.

82g into 1 litre of water ought to give you enough stock of KNO3 that will last quite long. From this stock, 10ml into 100 litres in your tank gives 5ppm.