Spray mop and some Javascript coding

A couple of years ago, I switched from a battery operated spray mop to a hand operated one.  I got the Freedom Spray Mop made by Libman, which is hand operated, uses reusable cleaning pads, and you can use the cleaning solution of your choice.  These are good points to consider if you're worried about all the batteries and plastic going to the landfill, and if you are interested in saving more money.  The cleaning solution that I have been using is Mrs. Meyer's Clean Day concentrated all purpose cleaner.

 

The slight problem I ran into when I first got it, was that the directions on the cleaning solution only tells you how to make a 1 gallon batch, but I only want to make enough to fill the spray mop container to the 6 oz. line.  Some reasons for the smaller fresh batch are I don't have a lot of floor to mop, I don't mop as often as I should, and I don't want to leave unused solution in the spray mop container for long because film or mildew can build up in the mechanisms (vent, valve, etc).

To make the 6 oz batch, we know:

• A big batch is 1/4 cup of concentrate mixed with 1 gallon of water
• 1 US cup = 8 US oz, 1/4 cup = 2 US oz
• 1 gallon = 128 US oz
• 1 US oz = 29.5735 ml

1. Find the ratio of 6 oz to 1 gallon
• 6 oz / 1 gallon = 6 oz / 128 oz = 0.046875
2. Multiply 1/4 cup concentrate by ratio above to get the concentrate measurement
• (1 / 4) cup * 0.046875 = 2 oz * 0.046875 = 0.09375 oz
3. Convert oz to ml
• 0.09375 oz * ( 29.5735 ml / 1 oz ) = 2.772515625... ml or 2.8 ml

So, I will mix 6 oz of water with 2.8 ml of concentrate

The final solution is a little over 6 oz in volume, but in my opinion it's easier to measure water with the fill lines on the side of container which is why I started out with 6 oz of water.  Now to measure 2.8 ml of concentrate, here are 3 options.

A. 10 ml (2 tsp) plastic syringe,  B. 5 ml (1 tsp) medicine dropper,  C. 10 ml (2 tsp) spoon

These three measuring devices can be bought at a local pharmacy or at a drugstore like Rite Aid, Walgreens, or CVS.  Typically the dropper and spoon are sold together.  You might be able to get the spoon for free if you ask the pharmacist nicely.  But what you use is all a matter of personal preference because each has its own pros and cons.  Now if you use one of these devices for measuring cleaning solution, I don't recommend you use it again, even after washing it, to measure actual medicine for yourself or someone else.

For your convenience, use the calculator below for different volumes.  All units of measurement are typical for products sold in the US.  And finally, if you're wondering why I didn't just write up a chart of measurements, well because it's more fun (for me) to code an interactive webpage.

1) Directions from concentrate e.g. dilute 1/4 (0.25) cups of concentrate with 1 gallon of water
Concentrate: cup ml
Water: gallon liter

2) Desired amount of solution e.g. 6 oz
Solution: oz ml

After filling out steps 1 and 2, click the "OK" button