I use a 10 mL oral syringe (intended for childrens' medicine). One syringe full for FC testing, I fill the syringe directly under the water. I can do it one-handed. If I lose my grip, no big deal, the plastic floats and is not sharp. For pH, I fill the color block the regular way and then pull some water off with the syringe. If I pull too much out, it's right there for me to put a bit back. I do not use a syringe to fill the color block for pH - it's almost impossible not to aerate the water which changes the pH.
For 25 mL, you have options. Two and a half syringes, or else use the syringe to remove water from the cylinder until you get down to 25 mL. Sometimes I do one way, sometimes I do it the other - depends on my mood at the moment. I don't do those test very often, so while it's less convenient than having a single syringe-full, it works for me. They do sell 50 mL syringes if you prefer to go that route.
I used syringes for a long but the rubber plastic plunger tip eventually degrades and gets hard to set precisely at the desired spot. So I switched to the sample sizer. Never had it easier. I can use it for all the TFP tests including the borate add on. Not sure why you would need 44 ml and I don't think there's a version of the sample sizer for this.
I use a small plastic bottle with squirt top, similar to a sample size shampoo bottle. I fill it from the pool then can squirt out the amount needed for each test as I go. Price was right (free) as I already had one. It also fits well into my TF-100 kit.
Order Lab Safety Supply Wash Bottle, Integrated Spout, 8 oz., Clear, 6FAV8 at Zoro.com. Great prices & free shipping on orders over $50 when you sign in or sign up for an account.
I've used something similar to this for years and it works really well...dispenses very accurately. Fill it once and use it for all of your test samples. I also use about a 3'-4' section of 1/2" PVC to collect the water from my pool. Stick it in the water, cover with your thumb, pull it out of the water quickly and dump it in your test bottle. No more bending over to collect my sample water.