Microspheres are provided that have controlled release profiles. The data reading device can be designed as a digital camera andor as a reading apparatus for an electronic data storage device. The liquid reservoir and the reaction area are each within a container made of a liquid impermeable material, the byproduct containment area is within a flexible container made of a hydrogen permeable, liquid impermeable material, and the hydrogen containment area is within a flexible container made of a hydrogen impermeable material. A water injection device is disposed in the oxidation device and is configured to inject water into the oxidation device.